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211232131000 = 23531119399497
BaseRepresentation
bin1100010010111001101…
…0101000011110111000
3202012020010112001121021
43010232122220132320
511430100411143000
6241012205352224
721155346326422
oct3045632503670
9665203461537
10211232131000
11816460384a0
1234b31268674
1316bc4370a37
14a31bb39812
1557645b811a
hex312e6a87b8

211232131000 has 128 divisors (see below), whose sum is σ = 542017344960. Its totient is φ = 76412928000.

The previous prime is 211232130971. The next prime is 211232131003. The reversal of 211232131000 is 131232112.

211232131000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2112321310002 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211232131003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2073252 + ... + 2172748.

Almost surely, 2211232131000 is an apocalyptic number.

211232131000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211232131000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271008672480).

211232131000 is an abundant number, since it is smaller than the sum of its proper divisors (330785213960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211232131000 is a wasteful number, since it uses less digits than its factorization.

211232131000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99722 (or 99708 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 211232131000 its reverse (131232112), we get a palindrome (211363363112).

The spelling of 211232131000 in words is "two hundred eleven billion, two hundred thirty-two million, one hundred thirty-one thousand".

Divisors: 1 2 4 5 8 10 11 20 22 25 40 44 50 55 88 100 110 125 193 200 220 250 275 386 440 500 550 772 965 1000 1100 1375 1544 1930 2123 2200 2750 3860 4246 4825 5500 7720 8492 9650 10615 11000 16984 19300 21230 24125 38600 42460 48250 53075 84920 96500 99497 106150 193000 198994 212300 265375 397988 424600 497485 530750 795976 994970 1061500 1094467 1989940 2123000 2188934 2487425 3979880 4377868 4974850 5472335 8755736 9949700 10944670 12437125 19202921 19899400 21889340 24874250 27361675 38405842 43778680 49748500 54723350 76811684 96014605 99497000 109446700 136808375 153623368 192029210 211232131 218893400 273616750 384058420 422464262 480073025 547233500 768116840 844928524 960146050 1056160655 1094467000 1689857048 1920292100 2112321310 2400365125 3840584200 4224642620 4800730250 5280803275 8449285240 9601460500 10561606550 19202921000 21123213100 26404016375 42246426200 52808032750 105616065500 211232131000