631961457 has 8 divisors (see below), whose sum is σ = 843157920. Its totient is φ = 421036320.

The previous prime is 631961437. The next prime is 631961467. The reversal of 631961457 is 754169136.

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

It is not a de Polignac number, because 631961457 - 2⁷ = 631961329 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (631961437) 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, 62332 + ... + 71757.

It is an arithmetic number, because the mean of its divisors is an integer number (105394740).

Almost surely, 2^631961457 is an apocalyptic number.

It is an amenable number.

631961457 is a deficient number, since it is larger than the sum of its proper divisors (211196463).

631961457 is a wasteful number, since it uses less digits than its factorization.

631961457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135663.

The product of its digits is 136080, while the sum is 42.

The square root of 631961457 is about 25138.8435891550. The cubic root of 631961457 is about 858.1506397064.

It can be divided in two parts, 6319 and 61457, that added together give a palindrome (67776).

The spelling of 631961457 in words is "six hundred thirty-one million, nine hundred sixty-one thousand, four hundred fifty-seven".