631180157 has 8 divisors (see below), whose sum is σ = 654679200. Its totient is φ = 607796784.

The previous prime is 631180093. The next prime is 631180159. The reversal of 631180157 is 751081136.

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 631180157 - 2⁶ = 631180093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631180159) 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, 17723 + ... + 39704.

It is an arithmetic number, because the mean of its divisors is an integer number (81834900).

Almost surely, 2^631180157 is an apocalyptic number.

It is an amenable number.

631180157 is a deficient number, since it is larger than the sum of its proper divisors (23499043).

631180157 is a wasteful number, since it uses less digits than its factorization.

631180157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57835.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 631180157 is about 25123.2990867044. The cubic root of 631180157 is about 857.7968472499.

It can be divided in two parts, 6311 and 80157, that added together give a palindrome (86468).

The spelling of 631180157 in words is "six hundred thirty-one million, one hundred eighty thousand, one hundred fifty-seven".