113021031131 has 4 divisors (see below), whose sum is σ = 116075653632. Its totient is φ = 109966408632.

The previous prime is 113021031091. The next prime is 113021031157. The reversal of 113021031131 is 131130120311.

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 113021031131 - 2²² = 113016836827 is a prime.

It is a super-2 number, since 2×113021031131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113021531131) 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, 1527311195 + ... + 1527311268.

It is an arithmetic number, because the mean of its divisors is an integer number (29018913408).

Almost surely, 2^113021031131 is an apocalyptic number.

113021031131 is a deficient number, since it is larger than the sum of its proper divisors (3054622501).

113021031131 is an equidigital number, since it uses as much as digits as its factorization.

113021031131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3054622500.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 113021031131 its reverse (131130120311), we get a palindrome (244151151442).

The spelling of 113021031131 in words is "one hundred thirteen billion, twenty-one million, thirty-one thousand, one hundred thirty-one".