113521239 has 12 divisors (see below), whose sum is σ = 176588776. Its totient is φ = 69859152.

The previous prime is 113521207. The next prime is 113521241. The reversal of 113521239 is 932125311.

113521239 is a `hidden beast` number, since 113 + 521 + 23 + 9 = 666.

It is not a de Polignac number, because 113521239 - 2⁵ = 113521207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113521259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 485017 + ... + 485250.

Almost surely, 2^113521239 is an apocalyptic number.

113521239 is a deficient number, since it is larger than the sum of its proper divisors (63067537).

113521239 is a wasteful number, since it uses less digits than its factorization.

113521239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970286 (or 970283 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 113521239 is about 10654.6346253637. The cubic root of 113521239 is about 484.2010283807.

The spelling of 113521239 in words is "one hundred thirteen million, five hundred twenty-one thousand, two hundred thirty-nine".