113021031 has 4 divisors (see below), whose sum is σ = 150694712. Its totient is φ = 75347352.

The previous prime is 113021021. The next prime is 113021053. The reversal of 113021031 is 130120311.

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

It is not a de Polignac number, because 113021031 - 2⁶ = 113020967 is a prime.

It is a super-2 number, since 2×113021031² = 25547506896605922, 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 = 113020998 and 113021016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113021021) 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, 18836836 + ... + 18836841.

It is an arithmetic number, because the mean of its divisors is an integer number (37673678).

Almost surely, 2^113021031 is an apocalyptic number.

113021031 is a deficient number, since it is larger than the sum of its proper divisors (37673681).

113021031 is an equidigital number, since it uses as much as digits as its factorization.

113021031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37673680.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 113021031 is about 10631.1349817411. The cubic root of 113021031 is about 483.4888038367.

Adding to 113021031 its reverse (130120311), we get a palindrome (243141342).

The spelling of 113021031 in words is "one hundred thirteen million, twenty-one thousand, thirty-one".