631423460 has 24 divisors (see below), whose sum is σ = 1328084856. Its totient is φ = 252170240.

The previous prime is 631423459. The next prime is 631423589. The reversal of 631423460 is 64324136.

It can be written as a sum of positive squares in 4 ways, for example, as 69923044 + 561500416 = 8362^2 + 23696^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11807 + ... + 37446.

It is an arithmetic number, because the mean of its divisors is an integer number (55336869).

Almost surely, 2^631423460 is an apocalyptic number.

It is an amenable number.

631423460 is an abundant number, since it is smaller than the sum of its proper divisors (696661396).

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

631423460 is a wasteful number, since it uses less digits than its factorization.

631423460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49903 (or 49901 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 631423460 is about 25128.1407987141. The cubic root of 631423460 is about 857.9070523069.

Adding to 631423460 its reverse (64324136), we get a palindrome (695747596).

The spelling of 631423460 in words is "six hundred thirty-one million, four hundred twenty-three thousand, four hundred sixty".