113220331031 has 4 divisors (see below), whose sum is σ = 113225498712. Its totient is φ = 113215163352.

The previous prime is 113220331009. The next prime is 113220331043. The reversal of 113220331031 is 130133022311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130133022311 = 26357 ⋅4937323.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113220331031 is a prime.

It is a super-2 number, since 2×113220331031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113220330994 and 113220331012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113220331051) 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 3 ways as a sum of consecutive naturals, for example, 2550836 + ... + 2594841.

It is an arithmetic number, because the mean of its divisors is an integer number (28306374678).

Almost surely, 2^113220331031 is an apocalyptic number.

113220331031 is a deficient number, since it is larger than the sum of its proper divisors (5167681).

113220331031 is an equidigital number, since it uses as much as digits as its factorization.

113220331031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5167680.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 113220331031 its reverse (130133022311), we get a palindrome (243353353342).

The spelling of 113220331031 in words is "one hundred thirteen billion, two hundred twenty million, three hundred thirty-one thousand, thirty-one".