631319438125 has 30 divisors (see below), whose sum is σ = 791271110630. Its totient is φ = 503540028000.

The previous prime is 631319438119. The next prime is 631319438143. The reversal of 631319438125 is 521834913136.

631319438125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 129733954596 + 501585483529 = 360186^2 + 708227^2 .

It is not a de Polignac number, because 631319438125 - 2³ = 631319438117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 75251431 + ... + 75259819.

Almost surely, 2^631319438125 is an apocalyptic number.

It is an amenable number.

631319438125 is a deficient number, since it is larger than the sum of its proper divisors (159951672505).

631319438125 is an frugal number, since it uses more digits than its factorization.

631319438125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9103 (or 8741 counting only the distinct ones).

The product of its digits is 466560, while the sum is 46.

The spelling of 631319438125 in words is "six hundred thirty-one billion, three hundred nineteen million, four hundred thirty-eight thousand, one hundred twenty-five".