631310460 has 96 divisors (see below), whose sum is σ = 1936230912. Its totient is φ = 152421120.

The previous prime is 631310447. The next prime is 631310461. The reversal of 631310460 is 64013136.

It is a self number, because there is not a number n which added to its sum of digits gives 631310460.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631310461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 171762 + ... + 175398.

It is an arithmetic number, because the mean of its divisors is an integer number (20169072).

Almost surely, 2^631310460 is an apocalyptic number.

631310460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631310460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (968115456).

631310460 is an abundant number, since it is smaller than the sum of its proper divisors (1304920452).

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

631310460 is a wasteful number, since it uses less digits than its factorization.

631310460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3923 (or 3921 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 631310460 is about 25125.8922229639. The cubic root of 631310460 is about 857.8558720311.

Adding to 631310460 its reverse (64013136), we get a palindrome (695323596).

The spelling of 631310460 in words is "six hundred thirty-one million, three hundred ten thousand, four hundred sixty".