631148790 has 16 divisors (see below), whose sum is σ = 1514757168. Its totient is φ = 168306336.

The previous prime is 631148789. The next prime is 631148801. The reversal of 631148790 is 97841136.

It is a congruent number.

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, 10519117 + ... + 10519176.

It is an arithmetic number, because the mean of its divisors is an integer number (94672323).

Almost surely, 2^631148790 is an apocalyptic number.

631148790 is an abundant number, since it is smaller than the sum of its proper divisors (883608378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

631148790 is a wasteful number, since it uses less digits than its factorization.

631148790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21038303.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 631148790 is about 25122.6748177816. The cubic root of 631148790 is about 857.7826373823.

The spelling of 631148790 in words is "six hundred thirty-one million, one hundred forty-eight thousand, seven hundred ninety".