631889051 has 8 divisors (see below), whose sum is σ = 660067584. Its totient is φ = 603769320.

The previous prime is 631889039. The next prime is 631889059. The reversal of 631889051 is 150988136.

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

It is not a de Polignac number, because 631889051 - 2¹⁴ = 631872667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631889059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8036 + ... + 36446.

It is an arithmetic number, because the mean of its divisors is an integer number (82508448).

Almost surely, 2^631889051 is an apocalyptic number.

631889051 is a deficient number, since it is larger than the sum of its proper divisors (28178533).

631889051 is a wasteful number, since it uses less digits than its factorization.

631889051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29401.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 631889051 is about 25137.4034259706. The cubic root of 631889051 is about 858.1178646969.

The spelling of 631889051 in words is "six hundred thirty-one million, eight hundred eighty-nine thousand, fifty-one".