312640260 has 48 divisors (see below), whose sum is σ = 880008192. Its totient is φ = 82931200.

The previous prime is 312640259. The next prime is 312640303. The reversal of 312640260 is 62046213.

It is a self number, because there is not a number n which added to its sum of digits gives 312640260.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2181 + ... + 25100.

It is an arithmetic number, because the mean of its divisors is an integer number (18333504).

Almost surely, 2^312640260 is an apocalyptic number.

312640260 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

312640260 is an abundant number, since it is smaller than the sum of its proper divisors (567367932).

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

312640260 is a wasteful number, since it uses less digits than its factorization.

312640260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27484 (or 27482 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 312640260 is about 17681.6362365025. The cubic root of 312640260 is about 678.7059154204.

Adding to 312640260 its reverse (62046213), we get a palindrome (374686473).

The spelling of 312640260 in words is "three hundred twelve million, six hundred forty thousand, two hundred sixty".