31201033113 has 32 divisors (see below), whose sum is σ = 49076421120. Its totient is φ = 19523669760.

The previous prime is 31201033069. The next prime is 31201033117. The reversal of 31201033113 is 31133010213.

It is a happy number.

31201033113 is a `hidden beast` number, since 312 + 0 + 10 + 331 + 13 = 666.

It is not a de Polignac number, because 31201033113 - 2²⁴ = 31184255897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31201033117) 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, 75843 + ... + 261063.

It is an arithmetic number, because the mean of its divisors is an integer number (1533638160).

Almost surely, 2^31201033113 is an apocalyptic number.

It is an amenable number.

31201033113 is a deficient number, since it is larger than the sum of its proper divisors (17875388007).

31201033113 is a wasteful number, since it uses less digits than its factorization.

31201033113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185614 (or 185608 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 31201033113 its reverse (31133010213), we get a palindrome (62334043326).

The spelling of 31201033113 in words is "thirty-one billion, two hundred one million, thirty-three thousand, one hundred thirteen".