3121312325 has 24 divisors (see below), whose sum is σ = 3934335240. Its totient is φ = 2456115200.

The previous prime is 3121312307. The next prime is 3121312333. The reversal of 3121312325 is 5232131213.

It can be written as a sum of positive squares in 12 ways, for example, as 1284075556 + 1837236769 = 35834^2 + 42863^2 .

It is not a de Polignac number, because 3121312325 - 2²⁸ = 2852876869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3121312325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 434765 + ... + 441885.

It is an arithmetic number, because the mean of its divisors is an integer number (163930635).

Almost surely, 2^3121312325 is an apocalyptic number.

It is an amenable number.

3121312325 is a deficient number, since it is larger than the sum of its proper divisors (813022915).

3121312325 is a wasteful number, since it uses less digits than its factorization.

3121312325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7417 (or 7412 counting only the distinct ones).

The product of its digits is 1080, while the sum is 23.

The square root of 3121312325 is about 55868.7061332192. The cubic root of 3121312325 is about 1461.4335586348.

Adding to 3121312325 its reverse (5232131213), we get a palindrome (8353443538).

The spelling of 3121312325 in words is "three billion, one hundred twenty-one million, three hundred twelve thousand, three hundred twenty-five".