631461907 has 8 divisors (see below), whose sum is σ = 641097216. Its totient is φ = 621899712.

The previous prime is 631461877. The next prime is 631461913. The reversal of 631461907 is 709164136.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-631461907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631461947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 748 + ... + 35545.

It is an arithmetic number, because the mean of its divisors is an integer number (80137152).

Almost surely, 2^631461907 is an apocalyptic number.

631461907 is a deficient number, since it is larger than the sum of its proper divisors (9635309).

631461907 is a wasteful number, since it uses less digits than its factorization.

631461907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36557.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 631461907 is about 25128.9058058643. The cubic root of 631461907 is about 857.9244644373.

The spelling of 631461907 in words is "six hundred thirty-one million, four hundred sixty-one thousand, nine hundred seven".