3131320012 has 12 divisors (see below), whose sum is σ = 5480783280. Its totient is φ = 1565381936.

The previous prime is 3131319991. The next prime is 3131320021. The reversal of 3131320012 is 2100231313.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43063 + ... + 90094.

It is an arithmetic number, because the mean of its divisors is an integer number (456731940).

Almost surely, 2^3131320012 is an apocalyptic number.

It is an amenable number.

3131320012 is a deficient number, since it is larger than the sum of its proper divisors (2349463268).

3131320012 is a wasteful number, since it uses less digits than its factorization.

3131320012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139040 (or 139038 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 3131320012 is about 55958.1987915980. The cubic root of 3131320012 is about 1462.9937962147.

Adding to 3131320012 its reverse (2100231313), we get a palindrome (5231551325).

The spelling of 3131320012 in words is "three billion, one hundred thirty-one million, three hundred twenty thousand, twelve".