312994321 has 8 divisors (see below), whose sum is σ = 324241664. Its totient is φ = 301818960.

The previous prime is 312994313. The next prime is 312994337. The reversal of 312994321 is 123499213.

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

It is a cyclic number.

It is not a de Polignac number, because 312994321 - 2³ = 312994313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312994301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9066 + ... + 26611.

It is an arithmetic number, because the mean of its divisors is an integer number (40530208).

Almost surely, 2^312994321 is an apocalyptic number.

312994321 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

312994321 is a deficient number, since it is larger than the sum of its proper divisors (11247343).

312994321 is a wasteful number, since it uses less digits than its factorization.

312994321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35991.

The product of its digits is 11664, while the sum is 34.

The square root of 312994321 is about 17691.6455141968. The cubic root of 312994321 is about 678.9620272838.

The spelling of 312994321 in words is "three hundred twelve million, nine hundred ninety-four thousand, three hundred twenty-one".