631422942 has 64 divisors (see below), whose sum is σ = 1386491904. Its totient is φ = 190840320.

The previous prime is 631422937. The next prime is 631422949. The reversal of 631422942 is 249224136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631422949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1255063 + ... + 1255565.

It is an arithmetic number, because the mean of its divisors is an integer number (21663936).

Almost surely, 2^631422942 is an apocalyptic number.

631422942 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

631422942 is an abundant number, since it is smaller than the sum of its proper divisors (755068962).

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

631422942 is a wasteful number, since it uses less digits than its factorization.

631422942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953.

The product of its digits is 20736, while the sum is 33.

The square root of 631422942 is about 25128.1304915427. The cubic root of 631422942 is about 857.9068177068.

The spelling of 631422942 in words is "six hundred thirty-one million, four hundred twenty-two thousand, nine hundred forty-two".