31368227725 has 36 divisors (see below), whose sum is σ = 41267788380. Its totient is φ = 23637644800.

The previous prime is 31368227719. The next prime is 31368227729. The reversal of 31368227725 is 52772286313.

It can be written as a sum of positive squares in 18 ways, for example, as 18679782276 + 12688445449 = 136674^2 + 112643^2 .

It is a de Polignac number, because none of the positive numbers 2^k-31368227725 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31368227729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 843831 + ... + 880219.

It is an arithmetic number, because the mean of its divisors is an integer number (1146327455).

Almost surely, 2^31368227725 is an apocalyptic number.

It is an amenable number.

31368227725 is a deficient number, since it is larger than the sum of its proper divisors (9899560655).

31368227725 is a wasteful number, since it uses less digits than its factorization.

31368227725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36498 (or 36464 counting only the distinct ones).

The product of its digits is 846720, while the sum is 46.

The spelling of 31368227725 in words is "thirty-one billion, three hundred sixty-eight million, two hundred twenty-seven thousand, seven hundred twenty-five".