113131031121 has 24 divisors (see below), whose sum is σ = 166881326976. Its totient is φ = 73825833120.

The previous prime is 113131031107. The next prime is 113131031137. The reversal of 113131031121 is 121130131311.

113131031121 is a `hidden beast` number, since 11 + 31 + 310 + 311 + 2 + 1 = 666.

It is not a de Polignac number, because 113131031121 - 2⁵ = 113131031089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113131031094 and 113131031103.

It is not an unprimeable number, because it can be changed into a prime (113131031191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69555 + ... + 480728.

It is an arithmetic number, because the mean of its divisors is an integer number (6953388624).

Almost surely, 2^113131031121 is an apocalyptic number.

It is an amenable number.

113131031121 is a deficient number, since it is larger than the sum of its proper divisors (53750295855).

113131031121 is a wasteful number, since it uses less digits than its factorization.

113131031121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550773 (or 550770 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 113131031121 its reverse (121130131311), we get a palindrome (234261162432).

The spelling of 113131031121 in words is "one hundred thirteen billion, one hundred thirty-one million, thirty-one thousand, one hundred twenty-one".