631361065 has 8 divisors (see below), whose sum is σ = 770474880. Its totient is φ = 496527792.

The previous prime is 631361053. The next prime is 631361077. The reversal of 631361065 is 560163136.

It is an interprime number because it is at equal distance from previous prime (631361053) and next prime (631361077).

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

It is a cyclic number.

It is not a de Polignac number, because 631361065 - 2¹¹ = 631359017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1069809 + ... + 1070398.

It is an arithmetic number, because the mean of its divisors is an integer number (96309360).

Almost surely, 2^631361065 is an apocalyptic number.

It is an amenable number.

631361065 is a deficient number, since it is larger than the sum of its proper divisors (139113815).

631361065 is a wasteful number, since it uses less digits than its factorization.

631361065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2140271.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 631361065 is about 25126.8992316999. The cubic root of 631361065 is about 857.8787929441.

The spelling of 631361065 in words is "six hundred thirty-one million, three hundred sixty-one thousand, sixty-five".