113121302331 has 32 divisors (see below), whose sum is σ = 156685777920. Its totient is φ = 72557269664.

The previous prime is 113121302299. The next prime is 113121302363. The reversal of 113121302331 is 133203121311.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (113121302299) and next prime (113121302363).

It is a cyclic number.

It is not a de Polignac number, because 113121302331 - 2⁵ = 113121302299 is a prime.

It is a super-3 number, since 3×113121302331³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 113121302298 and 113121302307.

It is not an unprimeable number, because it can be changed into a prime (113121302831) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1535956 + ... + 1607918.

It is an arithmetic number, because the mean of its divisors is an integer number (4896430560).

Almost surely, 2^113121302331 is an apocalyptic number.

113121302331 is a deficient number, since it is larger than the sum of its proper divisors (43564475589).

113121302331 is a wasteful number, since it uses less digits than its factorization.

113121302331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72215.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 113121302331 its reverse (133203121311), we get a palindrome (246324423642).

The spelling of 113121302331 in words is "one hundred thirteen billion, one hundred twenty-one million, three hundred two thousand, three hundred thirty-one".