113131239 has 32 divisors (see below), whose sum is σ = 167086080. Its totient is φ = 67661568.

The previous prime is 113131229. The next prime is 113131253. The reversal of 113131239 is 932131311.

It is not a de Polignac number, because 113131239 - 2⁴ = 113131223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113131229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 224662 + ... + 225164.

It is an arithmetic number, because the mean of its divisors is an integer number (5221440).

Almost surely, 2^113131239 is an apocalyptic number.

113131239 is a deficient number, since it is larger than the sum of its proper divisors (53954841).

113131239 is a wasteful number, since it uses less digits than its factorization.

113131239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671.

The product of its digits is 486, while the sum is 24.

The square root of 113131239 is about 10636.3169847462. The cubic root of 113131239 is about 483.6459044626.

The spelling of 113131239 in words is "one hundred thirteen million, one hundred thirty-one thousand, two hundred thirty-nine".