113221323031 has 4 divisors (see below), whose sum is σ = 114911193592. Its totient is φ = 111531452472.

The previous prime is 113221323013. The next prime is 113221323049. The reversal of 113221323031 is 130323122311.

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

It is an interprime number because it is at equal distance from previous prime (113221323013) and next prime (113221323049).

It is a cyclic number.

It is not a de Polignac number, because 113221323031 - 2¹⁷ = 113221191959 is a prime.

It is a super-2 number, since 2×113221323031² (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 = 113221322993 and 113221323011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113221323071) 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, 844935180 + ... + 844935313.

It is an arithmetic number, because the mean of its divisors is an integer number (28727798398).

Almost surely, 2^113221323031 is an apocalyptic number.

113221323031 is a deficient number, since it is larger than the sum of its proper divisors (1689870561).

113221323031 is an equidigital number, since it uses as much as digits as its factorization.

113221323031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1689870560.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 113221323031 its reverse (130323122311), we get a palindrome (243544445342).

The spelling of 113221323031 in words is "one hundred thirteen billion, two hundred twenty-one million, three hundred twenty-three thousand, thirty-one".