3131597225 has 12 divisors (see below), whose sum is σ = 3885661644. Its totient is φ = 2503677120.

The previous prime is 3131597207. The next prime is 3131597237. The reversal of 3131597225 is 5227951313.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 612661504 + 2518935721 = 24752^2 + 50189^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3131597225 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 707 + ... + 79143.

It is an arithmetic number, because the mean of its divisors is an integer number (323805137).

Almost surely, 2^3131597225 is an apocalyptic number.

It is an amenable number.

3131597225 is a deficient number, since it is larger than the sum of its proper divisors (754064419).

3131597225 is a wasteful number, since it uses less digits than its factorization.

3131597225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80044 (or 80039 counting only the distinct ones).

The product of its digits is 56700, while the sum is 38.

The square root of 3131597225 is about 55960.6757017819. The cubic root of 3131597225 is about 1463.0369674578.

The spelling of 3131597225 in words is "three billion, one hundred thirty-one million, five hundred ninety-seven thousand, two hundred twenty-five".