312912347 has 8 divisors (see below), whose sum is σ = 341487360. Its totient is φ = 284358760.

The previous prime is 312912343. The next prime is 312912359. The reversal of 312912347 is 743219213.

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 312912347 - 2² = 312912343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312912343) 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, 51218 + ... + 57000.

It is an arithmetic number, because the mean of its divisors is an integer number (42685920).

Almost surely, 2^312912347 is an apocalyptic number.

312912347 is a deficient number, since it is larger than the sum of its proper divisors (28575013).

312912347 is a wasteful number, since it uses less digits than its factorization.

312912347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10713.

The product of its digits is 9072, while the sum is 32.

The square root of 312912347 is about 17689.3286192552. The cubic root of 312912347 is about 678.9027481541.

The spelling of 312912347 in words is "three hundred twelve million, nine hundred twelve thousand, three hundred forty-seven".