631380478 has 8 divisors (see below), whose sum is σ = 947217168. Its totient is φ = 315641424.

The previous prime is 631380473. The next prime is 631380509. The reversal of 631380478 is 874083136.

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

It is a self number, because there is not a number n which added to its sum of digits gives 631380478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631380473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5226 + ... + 35917.

It is an arithmetic number, because the mean of its divisors is an integer number (118402146).

Almost surely, 2^631380478 is an apocalyptic number.

631380478 is a deficient number, since it is larger than the sum of its proper divisors (315836690).

631380478 is a wasteful number, since it uses less digits than its factorization.

631380478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48818.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 631380478 is about 25127.2855278878. The cubic root of 631380478 is about 857.8875854989.

The spelling of 631380478 in words is "six hundred thirty-one million, three hundred eighty thousand, four hundred seventy-eight".