31240551325 has 12 divisors (see below), whose sum is σ = 39785265460. Its totient is φ = 24316968960.

The previous prime is 31240551323. The next prime is 31240551337. The reversal of 31240551325 is 52315504213.

It can be written as a sum of positive squares in 6 ways, for example, as 159213924 + 31081337401 = 12618^2 + 176299^2 .

It is not a de Polignac number, because 31240551325 - 2¹ = 31240551323 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31240551323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16885860 + ... + 16887709.

Almost surely, 2^31240551325 is an apocalyptic number.

It is an amenable number.

31240551325 is a deficient number, since it is larger than the sum of its proper divisors (8544714135).

31240551325 is a wasteful number, since it uses less digits than its factorization.

31240551325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33773616 (or 33773611 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 31240551325 in words is "thirty-one billion, two hundred forty million, five hundred fifty-one thousand, three hundred twenty-five".