631915790140 has 48 divisors (see below), whose sum is σ = 1373361655680. Its totient is φ = 243947289600.

The previous prime is 631915790131. The next prime is 631915790153. The reversal of 631915790140 is 41097519136.

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, 1153540 + ... + 1610740.

It is an arithmetic number, because the mean of its divisors is an integer number (28611701160).

Almost surely, 2^631915790140 is an apocalyptic number.

It is an amenable number.

631915790140 is an abundant number, since it is smaller than the sum of its proper divisors (741445865540).

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

631915790140 is a wasteful number, since it uses less digits than its factorization.

631915790140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459622 (or 459620 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 46.

It can be divided in two parts, 63191 and 5790140, that added together give a triangular number (5853331 = T₃₄₂₁).

The spelling of 631915790140 in words is "six hundred thirty-one billion, nine hundred fifteen million, seven hundred ninety thousand, one hundred forty".