313988 has 6 divisors (see below), whose sum is σ = 549486. Its totient is φ = 156992.

The previous prime is 313987. The next prime is 313991. The reversal of 313988 is 889313.

It can be written as a sum of positive squares in only one way, i.e., 222784 + 91204 = 472^2 + 302^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 313988.

It is not an unprimeable number, because it can be changed into a prime (313981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39245 + ... + 39252.

It is an arithmetic number, because the mean of its divisors is an integer number (91581).

2³¹³⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

313988 is a deficient number, since it is larger than the sum of its proper divisors (235498).

313988 is a wasteful number, since it uses less digits than its factorization.

313988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78501 (or 78499 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 313988 is about 560.3463214834. The cubic root of 313988 is about 67.9679780024.

The spelling of 313988 in words is "three hundred thirteen thousand, nine hundred eighty-eight".