631243260 has 48 divisors (see below), whose sum is σ = 1963869600. Its totient is φ = 168331392.

The previous prime is 631243241. The next prime is 631243267. The reversal of 631243260 is 62342136.

631243260 is a `hidden beast` number, since 631 + 2 + 4 + 3 + 26 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631243267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 583945 + ... + 585024.

It is an arithmetic number, because the mean of its divisors is an integer number (40913950).

Almost surely, 2^631243260 is an apocalyptic number.

631243260 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

631243260 is an abundant number, since it is smaller than the sum of its proper divisors (1332626340).

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

631243260 is a wasteful number, since it uses less digits than its factorization.

631243260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168987 (or 1168979 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 631243260 is about 25124.5549214309. The cubic root of 631243260 is about 857.8254327233.

Adding to 631243260 its reverse (62342136), we get a palindrome (693585396).

The spelling of 631243260 in words is "six hundred thirty-one million, two hundred forty-three thousand, two hundred sixty".