113131231231 has 8 divisors (see below), whose sum is σ = 119522358720. Its totient is φ = 106906107168.

The previous prime is 113131231217. The next prime is 113131231237. The reversal of 113131231231 is 132132131311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113131231231 is a prime.

It is a super-2 number, since 2×113131231231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113131231237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41499456 + ... + 41502181.

It is an arithmetic number, because the mean of its divisors is an integer number (14940294840).

Almost surely, 2^113131231231 is an apocalyptic number.

113131231231 is a deficient number, since it is larger than the sum of its proper divisors (6391127489).

113131231231 is an equidigital number, since it uses as much as digits as its factorization.

113131231231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83001713.

The product of its digits is 324, while the sum is 22.

Adding to 113131231231 its reverse (132132131311), we get a palindrome (245263362542).

The spelling of 113131231231 in words is "one hundred thirteen billion, one hundred thirty-one million, two hundred thirty-one thousand, two hundred thirty-one".