113510313021 has 32 divisors (see below), whose sum is σ = 177669623808. Its totient is φ = 63115922880.

The previous prime is 113510312963. The next prime is 113510313043. The reversal of 113510313021 is 120313015311.

It is not a de Polignac number, because 113510313021 - 2⁶ = 113510312957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113510313121) 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, 161635 + ... + 503136.

It is an arithmetic number, because the mean of its divisors is an integer number (5552175744).

Almost surely, 2^113510313021 is an apocalyptic number.

It is an amenable number.

113510313021 is a deficient number, since it is larger than the sum of its proper divisors (64159310787).

113510313021 is a wasteful number, since it uses less digits than its factorization.

113510313021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665001.

The product of its (nonzero) digits is 270, while the sum is 21.

Adding to 113510313021 its reverse (120313015311), we get a palindrome (233823328332).

The spelling of 113510313021 in words is "one hundred thirteen billion, five hundred ten million, three hundred thirteen thousand, twenty-one".