313897978 has 8 divisors (see below), whose sum is σ = 470950272. Its totient is φ = 156914556.

The previous prime is 313897967. The next prime is 313897981. The reversal of 313897978 is 879798313.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3700 + ... + 25327.

It is an arithmetic number, because the mean of its divisors is an integer number (58868784).

Almost surely, 2^313897978 is an apocalyptic number.

313897978 is a deficient number, since it is larger than the sum of its proper divisors (157052294).

313897978 is a wasteful number, since it uses less digits than its factorization.

313897978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34436.

The product of its digits is 2286144, while the sum is 55.

The square root of 313897978 is about 17717.1661955291. The cubic root of 313897978 is about 679.6148179008.

The spelling of 313897978 in words is "three hundred thirteen million, eight hundred ninety-seven thousand, nine hundred seventy-eight".