3131936913 has 32 divisors (see below), whose sum is σ = 4934172672. Its totient is φ = 1729224000.

The previous prime is 3131936893. The next prime is 3131936947. The reversal of 3131936913 is 3196391313.

It is not a de Polignac number, because 3131936913 - 2¹⁶ = 3131871377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3131936993) 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, 452920 + ... + 459782.

It is an arithmetic number, because the mean of its divisors is an integer number (154192896).

Almost surely, 2^3131936913 is an apocalyptic number.

It is an amenable number.

3131936913 is a deficient number, since it is larger than the sum of its proper divisors (1802235759).

3131936913 is a wasteful number, since it uses less digits than its factorization.

3131936913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7605.

The product of its digits is 39366, while the sum is 39.

The square root of 3131936913 is about 55963.7106793322. The cubic root of 3131936913 is about 1463.0898646534.

The spelling of 3131936913 in words is "three billion, one hundred thirty-one million, nine hundred thirty-six thousand, nine hundred thirteen".