31352521401 has 12 divisors (see below), whose sum is σ = 45429840612. Its totient is φ = 20835743136.

The previous prime is 31352521397. The next prime is 31352521451. The reversal of 31352521401 is 10412525313.

31352521401 is a `hidden beast` number, since 3 + 1 + 3 + 5 + 252 + 1 + 401 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4889365776 + 26463155625 = 69924^2 + 162675^2 .

It is not a de Polignac number, because 31352521401 - 2² = 31352521397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31352521451) 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, 5491806 + ... + 5497511.

It is an arithmetic number, because the mean of its divisors is an integer number (3785820051).

Almost surely, 2^31352521401 is an apocalyptic number.

It is an amenable number.

31352521401 is a deficient number, since it is larger than the sum of its proper divisors (14077319211).

31352521401 is a wasteful number, since it uses less digits than its factorization.

31352521401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10989640 (or 10989637 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The spelling of 31352521401 in words is "thirty-one billion, three hundred fifty-two million, five hundred twenty-one thousand, four hundred one".