3131577564 has 12 divisors (see below), whose sum is σ = 7307014344. Its totient is φ = 1043859184.

The previous prime is 3131577563. The next prime is 3131577583. The reversal of 3131577564 is 4657751313.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131577563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130482387 + ... + 130482410.

It is an arithmetic number, because the mean of its divisors is an integer number (608917862).

Almost surely, 2^3131577564 is an apocalyptic number.

It is an amenable number.

3131577564 is an abundant number, since it is smaller than the sum of its proper divisors (4175436780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3131577564 is a wasteful number, since it uses less digits than its factorization.

3131577564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260964804 (or 260964802 counting only the distinct ones).

The product of its digits is 264600, while the sum is 42.

The square root of 3131577564 is about 55960.5000335058. The cubic root of 3131577564 is about 1463.0339056730.

The spelling of 3131577564 in words is "three billion, one hundred thirty-one million, five hundred seventy-seven thousand, five hundred sixty-four".