113512020531 has 64 divisors (see below), whose sum is σ = 191342850048. Its totient is φ = 58260676608.

The previous prime is 113512020527. The next prime is 113512020551. The reversal of 113512020531 is 135020215311.

It is not a de Polignac number, because 113512020531 - 2² = 113512020527 is a prime.

It is a super-2 number, since 2×113512020531² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (113512020521) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2194195 + ... + 2245331.

It is an arithmetic number, because the mean of its divisors is an integer number (2989732032).

Almost surely, 2^113512020531 is an apocalyptic number.

113512020531 is a deficient number, since it is larger than the sum of its proper divisors (77830829517).

113512020531 is a wasteful number, since it uses less digits than its factorization.

113512020531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51380.

The product of its (nonzero) digits is 900, while the sum is 24.

Adding to 113512020531 its reverse (135020215311), we get a palindrome (248532235842).

The spelling of 113512020531 in words is "one hundred thirteen billion, five hundred twelve million, twenty thousand, five hundred thirty-one".