113872531 has 4 divisors (see below), whose sum is σ = 117799200. Its totient is φ = 109945864.

The previous prime is 113872519. The next prime is 113872541. The reversal of 113872531 is 135278311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 113872531 - 2¹¹ = 113870483 is a prime.

It is a super-2 number, since 2×113872531² = 25933906632691922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113872493 and 113872502.

It is not an unprimeable number, because it can be changed into a prime (113872541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1963291 + ... + 1963348.

It is an arithmetic number, because the mean of its divisors is an integer number (29449800).

Almost surely, 2^113872531 is an apocalyptic number.

113872531 is a deficient number, since it is larger than the sum of its proper divisors (3926669).

113872531 is an equidigital number, since it uses as much as digits as its factorization.

113872531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3926668.

The product of its digits is 5040, while the sum is 31.

The square root of 113872531 is about 10671.1072996198. The cubic root of 113872531 is about 484.6999681854.

The spelling of 113872531 in words is "one hundred thirteen million, eight hundred seventy-two thousand, five hundred thirty-one".