313999 has 8 divisors (see below), whose sum is σ = 370688. Its totient is φ = 260280.

The previous prime is 313997. The next prime is 314003. The reversal of 313999 is 999313.

It is a happy number.

313999 is nontrivially palindromic in base 13.

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 313999 - 2¹ = 313997 is a prime.

It is a Duffinian number.

313999 is a modest number, since divided by 999 gives 313 as remainder.

313999 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313991) 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, 507 + ... + 940.

It is an arithmetic number, because the mean of its divisors is an integer number (46336).

2³¹³⁹⁹⁹ is an apocalyptic number.

313999 is a deficient number, since it is larger than the sum of its proper divisors (56689).

313999 is a wasteful number, since it uses less digits than its factorization.

313999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485.

The product of its digits is 6561, while the sum is 34.

The square root of 313999 is about 560.3561367559. The cubic root of 313999 is about 67.9687717048.

The spelling of 313999 in words is "three hundred thirteen thousand, nine hundred ninety-nine".