313978 has 16 divisors (see below), whose sum is σ = 552384. Its totient is φ = 131040.

The previous prime is 313969. The next prime is 313979. The reversal of 313978 is 879313.

It is not an unprimeable number, because it can be changed into a prime (313979) 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, 301 + ... + 847.

It is an arithmetic number, because the mean of its divisors is an integer number (34524).

2³¹³⁹⁷⁸ is an apocalyptic number.

313978 is a deficient number, since it is larger than the sum of its proper divisors (238406).

313978 is a wasteful number, since it uses less digits than its factorization.

313978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597.

The product of its digits is 4536, while the sum is 31.

The square root of 313978 is about 560.3373983592. The cubic root of 313978 is about 67.9672564388.

The spelling of 313978 in words is "three hundred thirteen thousand, nine hundred seventy-eight".