631110994740 has 72 divisors (see below), whose sum is σ = 1927218220200. Its totient is φ = 167166753024.

The previous prime is 631110994727. The next prime is 631110994777. The reversal of 631110994740 is 47499011136.

It is a happy number.

631110994740 is a `hidden beast` number, since 63 + 1 + 110 + 9 + 9 + 474 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 93467164176 + 537643830564 = 305724^2 + 733242^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11738859 + ... + 11792498.

It is an arithmetic number, because the mean of its divisors is an integer number (26766919725).

Almost surely, 2^631110994740 is an apocalyptic number.

631110994740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

631110994740 is an abundant number, since it is smaller than the sum of its proper divisors (1296107225460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

631110994740 is a wasteful number, since it uses less digits than its factorization.

631110994740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23531521 (or 23531516 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 631110994740 in words is "six hundred thirty-one billion, one hundred ten million, nine hundred ninety-four thousand, seven hundred forty".