313489999 has 2 divisors, whose sum is σ = 313490000. Its totient is φ = 313489998.

The previous prime is 313489997. The next prime is 313490027. The reversal of 313489999 is 999984313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 313489999 - 2¹ = 313489997 is a prime.

Together with 313489997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313489997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156744999 + 156745000.

It is an arithmetic number, because the mean of its divisors is an integer number (156745000).

Almost surely, 2^313489999 is an apocalyptic number.

313489999 is a deficient number, since it is larger than the sum of its proper divisors (1).

313489999 is an equidigital number, since it uses as much as digits as its factorization.

313489999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1889568, while the sum is 55.

The square root of 313489999 is about 17705.6487878869. The cubic root of 313489999 is about 679.3202542700.

The spelling of 313489999 in words is "three hundred thirteen million, four hundred eighty-nine thousand, nine hundred ninety-nine".