113531511312 has 30 divisors (see below), whose sum is σ = 317730549422. Its totient is φ = 37843837056.

The previous prime is 113531511307. The next prime is 113531511361. The reversal of 113531511312 is 213115135311.

113531511312 is a `hidden beast` number, since 1 + 1 + 3 + 531 + 5 + 113 + 12 = 666.

It can be written as a sum of positive squares in only one way, i.e., 109312229376 + 4219281936 = 330624^2 + 64956^2 .

It is a super-2 number, since 2×113531511312² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 394206493 + ... + 394206780.

Almost surely, 2^113531511312 is an apocalyptic number.

113531511312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

113531511312 is an abundant number, since it is smaller than the sum of its proper divisors (204199038110).

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

113531511312 is a wasteful number, since it uses less digits than its factorization.

113531511312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788413287 (or 788413278 counting only the distinct ones).

The product of its digits is 1350, while the sum is 27.

Adding to 113531511312 its reverse (213115135311), we get a palindrome (326646646623).

The spelling of 113531511312 in words is "one hundred thirteen billion, five hundred thirty-one million, five hundred eleven thousand, three hundred twelve".