631437734136 has 64 divisors (see below), whose sum is σ = 1754595457920. Its totient is φ = 187734485120.

The previous prime is 631437734113. The next prime is 631437734171.

631437734136 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×631437734136² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22550250 + ... + 22578233.

It is an arithmetic number, because the mean of its divisors is an integer number (27415554030).

Almost surely, 2^631437734136 is an apocalyptic number.

631437734136 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

631437734136 is an abundant number, since it is smaller than the sum of its proper divisors (1123157723784).

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

631437734136 is a wasteful number, since it uses less digits than its factorization.

631437734136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45128556 (or 45128552 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 48.

The spelling of 631437734136 in words is "six hundred thirty-one billion, four hundred thirty-seven million, seven hundred thirty-four thousand, one hundred thirty-six".