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131113230210 = 23251456813669
BaseRepresentation
bin111101000011011110…
…1010001111110000010
3110112102111200012101100
41322012331101332002
54122004441331320
6140122123315230
712321052032324
oct1720675217602
9415374605340
10131113230210
11506720004a6
12214b167bb16
13c496708431
1464bb28d614
15362595e790
hex1e86f51f82

131113230210 has 24 divisors (see below), whose sum is σ = 340894398780. Its totient is φ = 34963528032.

The previous prime is 131113230203. The next prime is 131113230239. The reversal of 131113230210 is 12032311131.

131113230210 is a `hidden beast` number, since 131 + 1 + 1 + 323 + 0 + 210 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 131109892281 + 3337929 = 362091^2 + 1827^2 .

It is a super-2 number, since 2×1311132302102 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 728406745 + ... + 728406924.

Almost surely, 2131113230210 is an apocalyptic number.

131113230210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131113230210 is an abundant number, since it is smaller than the sum of its proper divisors (209781168570).

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

131113230210 is a wasteful number, since it uses less digits than its factorization.

131113230210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456813682 (or 1456813679 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 131113230210 its reverse (12032311131), we get a palindrome (143145541341).

The spelling of 131113230210 in words is "one hundred thirty-one billion, one hundred thirteen million, two hundred thirty thousand, two hundred ten".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 1456813669 2913627338 4370441007 7284068345 8740882014 13111323021 14568136690 21852205035 26222646042 43704410070 65556615105 131113230210