312399998 has 8 divisors (see below), whose sum is σ = 471971640. Its totient is φ = 155076120.

The previous prime is 312399937. The next prime is 312400001. The reversal of 312399998 is 899993213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561593 + ... + 562148.

It is an arithmetic number, because the mean of its divisors is an integer number (58996455).

Almost surely, 2^312399998 is an apocalyptic number.

312399998 is a deficient number, since it is larger than the sum of its proper divisors (159571642).

312399998 is a wasteful number, since it uses less digits than its factorization.

312399998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123882.

The product of its digits is 944784, while the sum is 53.

The square root of 312399998 is about 17674.8408196510. The cubic root of 312399998 is about 678.5320105086.

The spelling of 312399998 in words is "three hundred twelve million, three hundred ninety-nine thousand, nine hundred ninety-eight".