631472342722 has 20 divisors (see below), whose sum is σ = 1026139886046. Its totient is φ = 291448747200.

The previous prime is 631472342687. The next prime is 631472342779. The reversal of 631472342722 is 227243274136.

It can be written as a sum of positive squares in 5 ways, for example, as 299536195401 + 331936147321 = 547299^2 + 576139^2 .

It is a super-2 number, since 2×631472342722² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5470279 + ... + 5584522.

Almost surely, 2^631472342722 is an apocalyptic number.

631472342722 is a deficient number, since it is larger than the sum of its proper divisors (394667543324).

631472342722 is an equidigital number, since it uses as much as digits as its factorization.

631472342722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11054855 (or 11054816 counting only the distinct ones).

The product of its digits is 677376, while the sum is 43.

The spelling of 631472342722 in words is "six hundred thirty-one billion, four hundred seventy-two million, three hundred forty-two thousand, seven hundred twenty-two".