631650140 has 24 divisors (see below), whose sum is σ = 1447053552. Its totient is φ = 229690880.

The previous prime is 631650139. The next prime is 631650143. The reversal of 631650140 is 41056136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631650143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1435349 + ... + 1435788.

It is an arithmetic number, because the mean of its divisors is an integer number (60293898).

Almost surely, 2^631650140 is an apocalyptic number.

It is an amenable number.

631650140 is an abundant number, since it is smaller than the sum of its proper divisors (815403412).

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

631650140 is a wasteful number, since it uses less digits than its factorization.

631650140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871157 (or 2871155 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 631650140 is about 25132.6508749077. The cubic root of 631650140 is about 858.0097024384.

The spelling of 631650140 in words is "six hundred thirty-one million, six hundred fifty thousand, one hundred forty".