312398660 has 96 divisors (see below), whose sum is σ = 772789248. Its totient is φ = 103864320.

The previous prime is 312398623. The next prime is 312398683. The reversal of 312398660 is 66893213.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1296140 + ... + 1296380.

It is an arithmetic number, because the mean of its divisors is an integer number (8049888).

Almost surely, 2^312398660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312398660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386394624).

312398660 is an abundant number, since it is smaller than the sum of its proper divisors (460390588).

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

312398660 is a wasteful number, since it uses less digits than its factorization.

312398660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501 (or 499 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 312398660 is about 17674.8029691988. The cubic root of 312398660 is about 678.5310417963.

The spelling of 312398660 in words is "three hundred twelve million, three hundred ninety-eight thousand, six hundred sixty".