113251531 has 4 divisors (see below), whose sum is σ = 113287464. Its totient is φ = 113215600.

The previous prime is 113251511. The next prime is 113251559. The reversal of 113251531 is 135152311.

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 113251531 - 2⁵ = 113251499 is a prime.

It is a super-2 number, since 2×113251531² = 25651818547687922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113251511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12730 + ... + 19711.

It is an arithmetic number, because the mean of its divisors is an integer number (28321866).

Almost surely, 2^113251531 is an apocalyptic number.

113251531 is a deficient number, since it is larger than the sum of its proper divisors (35933).

113251531 is an equidigital number, since it uses as much as digits as its factorization.

113251531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35932.

The product of its digits is 450, while the sum is 22.

The square root of 113251531 is about 10641.9702593082. The cubic root of 113251531 is about 483.8172633357.

The spelling of 113251531 in words is "one hundred thirteen million, two hundred fifty-one thousand, five hundred thirty-one".