3131725 has 6 divisors (see below), whose sum is σ = 3883370. Its totient is φ = 2505360.

The previous prime is 3131701. The next prime is 3131743. The reversal of 3131725 is 5271313.

It can be written as a sum of positive squares in 3 ways, for example, as 352836 + 2778889 = 594^2 + 1667^2 .

It is not a de Polignac number, because 3131725 - 2¹¹ = 3129677 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3131696 and 3131705.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 62610 + ... + 62659.

Almost surely, 2^3131725 is an apocalyptic number.

It is an amenable number.

3131725 is a deficient number, since it is larger than the sum of its proper divisors (751645).

3131725 is a wasteful number, since it uses less digits than its factorization.

3131725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125279 (or 125274 counting only the distinct ones).

The product of its digits is 630, while the sum is 22.

The square root of 3131725 is about 1769.6680479683. The cubic root of 3131725 is about 146.3056865398.

The spelling of 3131725 in words is "three million, one hundred thirty-one thousand, seven hundred twenty-five".