113531015 has 32 divisors (see below), whose sum is σ = 156764160. Its totient is φ = 78188544.

The previous prime is 113530999. The next prime is 113531017. The reversal of 113531015 is 510135311.

It is a cyclic number.

It is not a de Polignac number, because 113531015 - 2⁴ = 113530999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113531017) 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, 139931 + ... + 140739.

It is an arithmetic number, because the mean of its divisors is an integer number (4898880).

Almost surely, 2^113531015 is an apocalyptic number.

113531015 is a deficient number, since it is larger than the sum of its proper divisors (43233145).

113531015 is a wasteful number, since it uses less digits than its factorization.

113531015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971.

The product of its (nonzero) digits is 225, while the sum is 20.

The square root of 113531015 is about 10655.0933829789. The cubic root of 113531015 is about 484.2149271408.

Adding to 113531015 its reverse (510135311), we get a palindrome (623666326).

The spelling of 113531015 in words is "one hundred thirteen million, five hundred thirty-one thousand, fifteen".