3131245513 has 16 divisors (see below), whose sum is σ = 3433766400. Its totient is φ = 2831748480.

The previous prime is 3131245511. The next prime is 3131245547. The reversal of 3131245513 is 3155421313.

It is a happy number.

It is not a de Polignac number, because 3131245513 - 2¹ = 3131245511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3131245511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2154295 + ... + 2155747.

It is an arithmetic number, because the mean of its divisors is an integer number (214610400).

Almost surely, 2^3131245513 is an apocalyptic number.

It is an amenable number.

3131245513 is a deficient number, since it is larger than the sum of its proper divisors (302520887).

3131245513 is a wasteful number, since it uses less digits than its factorization.

3131245513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2352.

The product of its digits is 5400, while the sum is 28.

The square root of 3131245513 is about 55957.5331211089. The cubic root of 3131245513 is about 1462.9821938193.

Adding to 3131245513 its reverse (3155421313), we get a palindrome (6286666826).

The spelling of 3131245513 in words is "three billion, one hundred thirty-one million, two hundred forty-five thousand, five hundred thirteen".