3131133312 has 32 divisors (see below), whose sum is σ = 8317073880. Its totient is φ = 1043710976.

The previous prime is 3131133293. The next prime is 3131133319. The reversal of 3131133312 is 2133311313.

It is a tau number, because it is divible by the number of its divisors (32).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131133319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4076613 + ... + 4077380.

Almost surely, 2^3131133312 is an apocalyptic number.

3131133312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3131133312 is an abundant number, since it is smaller than the sum of its proper divisors (5185940568).

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

3131133312 is an equidigital number, since it uses as much as digits as its factorization.

3131133312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8154010 (or 8153998 counting only the distinct ones).

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

The square root of 3131133312 is about 55956.5305572102. The cubic root of 3131133312 is about 1462.9647194069.

Adding to 3131133312 its reverse (2133311313), we get a palindrome (5264444625).

The spelling of 3131133312 in words is "three billion, one hundred thirty-one million, one hundred thirty-three thousand, three hundred twelve".