113581731 has 8 divisors (see below), whose sum is σ = 151491600. Its totient is φ = 75696512.

The previous prime is 113581723. The next prime is 113581733. The reversal of 113581731 is 137185311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 113581731 - 2³ = 113581723 is a prime.

It is a super-2 number, since 2×113581731² = 25801619233912722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (113581733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14311 + ... + 20783.

It is an arithmetic number, because the mean of its divisors is an integer number (18936450).

Almost surely, 2^113581731 is an apocalyptic number.

113581731 is a deficient number, since it is larger than the sum of its proper divisors (37909869).

113581731 is an equidigital number, since it uses as much as digits as its factorization.

113581731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12325.

The product of its digits is 2520, while the sum is 30.

The square root of 113581731 is about 10657.4730119292. The cubic root of 113581731 is about 484.2870184203.

The spelling of 113581731 in words is "one hundred thirteen million, five hundred eighty-one thousand, seven hundred thirty-one".