3131312325 has 48 divisors (see below), whose sum is σ = 5356800000. Its totient is φ = 1612324800.

The previous prime is 3131312321. The next prime is 3131312383. The reversal of 3131312325 is 5232131313.

It is not a de Polignac number, because 3131312325 - 2² = 3131312321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3131312295 and 3131312304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131312321) 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 47 ways as a sum of consecutive naturals, for example, 1158826 + ... + 1161524.

It is an arithmetic number, because the mean of its divisors is an integer number (111600000).

Almost surely, 2^3131312325 is an apocalyptic number.

It is an amenable number.

3131312325 is a deficient number, since it is larger than the sum of its proper divisors (2225487675).

3131312325 is a wasteful number, since it uses less digits than its factorization.

3131312325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3242 (or 3237 counting only the distinct ones).

The product of its digits is 1620, while the sum is 24.

The square root of 3131312325 is about 55958.1301063572. The cubic root of 3131312325 is about 1462.9925990580.

Adding to 3131312325 its reverse (5232131313), we get a palindrome (8363443638).

The spelling of 3131312325 in words is "three billion, one hundred thirty-one million, three hundred twelve thousand, three hundred twenty-five".