3131332113 has 24 divisors (see below), whose sum is σ = 5230360128. Its totient is φ = 1651690656.

The previous prime is 3131332097. The next prime is 3131332121. The reversal of 3131332113 is 3112331313.

It is not a de Polignac number, because 3131332113 - 2⁴ = 3131332097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 3131332113.

It is not an unprimeable number, because it can be changed into a prime (3131332213) 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, 817381 + ... + 821202.

It is an arithmetic number, because the mean of its divisors is an integer number (217931672).

Almost surely, 2^3131332113 is an apocalyptic number.

It is an amenable number.

3131332113 is a deficient number, since it is larger than the sum of its proper divisors (2099028015).

3131332113 is a wasteful number, since it uses less digits than its factorization.

3131332113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638613 (or 1638606 counting only the distinct ones).

The product of its digits is 486, while the sum is 21.

The square root of 3131332113 is about 55958.3069168466. The cubic root of 3131332113 is about 1462.9956807943.

Adding to 3131332113 its reverse (3112331313), we get a palindrome (6243663426).

The spelling of 3131332113 in words is "three billion, one hundred thirty-one million, three hundred thirty-two thousand, one hundred thirteen".