313989 has 16 divisors (see below), whose sum is σ = 460992. Its totient is φ = 188928.

The previous prime is 313987. The next prime is 313991. The reversal of 313989 is 989313.

It is an interprime number because it is at equal distance from previous prime (313987) and next prime (313991).

It is not a de Polignac number, because 313989 - 2¹ = 313987 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 313989.

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

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3189 + ... + 3285.

It is an arithmetic number, because the mean of its divisors is an integer number (28812).

2³¹³⁹⁸⁹ is an apocalyptic number.

313989 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

313989 is a deficient number, since it is larger than the sum of its proper divisors (147003).

313989 is a wasteful number, since it uses less digits than its factorization.

313989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196.

The product of its digits is 5832, while the sum is 33.

The square root of 313989 is about 560.3472137880. The cubic root of 313989 is about 67.9680501579.

The spelling of 313989 in words is "three hundred thirteen thousand, nine hundred eighty-nine".