631163145 has 16 divisors (see below), whose sum is σ = 1010751552. Its totient is φ = 336323520.

The previous prime is 631163123. The next prime is 631163177. The reversal of 631163145 is 541361136.

It is not a de Polignac number, because 631163145 - 2¹⁸ = 630901001 is a prime.

It is a Curzon 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, 402 + ... + 35531.

It is an arithmetic number, because the mean of its divisors is an integer number (63171972).

Almost surely, 2^631163145 is an apocalyptic number.

It is an amenable number.

631163145 is a deficient number, since it is larger than the sum of its proper divisors (379588407).

631163145 is a wasteful number, since it uses less digits than its factorization.

631163145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37112.

The product of its digits is 6480, while the sum is 30.

The square root of 631163145 is about 25122.9605142388. The cubic root of 631163145 is about 857.7891405379.

The spelling of 631163145 in words is "six hundred thirty-one million, one hundred sixty-three thousand, one hundred forty-five".