3131532012636 has 36 divisors (see below), whose sum is σ = 7924175953512. Its totient is φ = 1042741728864.

The previous prime is 3131532012613. The next prime is 3131532012647. The reversal of 3131532012636 is 6362102351313.

3131532012636 is a `hidden beast` number, since 3 + 1 + 3 + 1 + 5 + 3 + 2 + 0 + 12 + 636 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 3131532012636.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45893575 + ... + 45961758.

Almost surely, 2^{3131532012636} is an apocalyptic number.

3131532012636 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3131532012636 is an abundant number, since it is smaller than the sum of its proper divisors (4792643940876).

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

3131532012636 is a wasteful number, since it uses less digits than its factorization.

3131532012636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91856290 (or 91856285 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

Adding to 3131532012636 its reverse (6362102351313), we get a palindrome (9493634363949).

The spelling of 3131532012636 in words is "three trillion, one hundred thirty-one billion, five hundred thirty-two million, twelve thousand, six hundred thirty-six".