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131230110 = 23511478461
BaseRepresentation
bin1111101001001…
…10100110011110
3100010221011212110
413310212212132
5232043330420
621004414450
73152303034
oct764464636
9303834773
10131230110
1168092140
1237b47426
132125966b
1413600554
15b7c2ee0
hex7d2699e

131230110 has 64 divisors (see below), whose sum is σ = 350936064. Its totient is φ = 31132800.

The previous prime is 131230087. The next prime is 131230117. The reversal of 131230110 is 11032131.

It is a super-2 number, since 2×1312301102 = 34442683541224200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131230117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11280 + ... + 19740.

It is an arithmetic number, because the mean of its divisors is an integer number (5483376).

Almost surely, 2131230110 is an apocalyptic number.

131230110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 131230110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175468032).

131230110 is an abundant number, since it is smaller than the sum of its proper divisors (219705954).

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

131230110 is a wasteful number, since it uses less digits than its factorization.

131230110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8529.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 131230110 is about 11455.5711337323. The cubic root of 131230110 is about 508.1725058426.

Adding to 131230110 its reverse (11032131), we get a palindrome (142262241).

The spelling of 131230110 in words is "one hundred thirty-one million, two hundred thirty thousand, one hundred ten".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 47 55 66 94 110 141 165 235 282 330 470 517 705 1034 1410 1551 2585 3102 5170 7755 8461 15510 16922 25383 42305 50766 84610 93071 126915 186142 253830 279213 397667 465355 558426 795334 930710 1193001 1396065 1988335 2386002 2792130 3976670 4374337 5965005 8748674 11930010 13123011 21871685 26246022 43743370 65615055 131230110