312478945 has 8 divisors (see below), whose sum is σ = 375270336. Its totient is φ = 249786096.

The previous prime is 312478939. The next prime is 312478961. The reversal of 312478945 is 549874213.

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 312478945 - 2⁹ = 312478433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17467 + ... + 30496.

It is an arithmetic number, because the mean of its divisors is an integer number (46908792).

Almost surely, 2^312478945 is an apocalyptic number.

It is an amenable number.

312478945 is a deficient number, since it is larger than the sum of its proper divisors (62791391).

312478945 is a wasteful number, since it uses less digits than its factorization.

312478945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49271.

The product of its digits is 241920, while the sum is 43.

The square root of 312478945 is about 17677.0739943012. The cubic root of 312478945 is about 678.5891632563.

The spelling of 312478945 in words is "three hundred twelve million, four hundred seventy-eight thousand, nine hundred forty-five".