313499843 has 2 divisors, whose sum is σ = 313499844. Its totient is φ = 313499842.

The previous prime is 313499803. The next prime is 313499897. The reversal of 313499843 is 348994313.

It is a weak prime.

It is an emirp because it is prime and its reverse (348994313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 313499843 - 2²⁰ = 312451267 is a prime.

It is a super-2 number, since 2×313499843² = 196564303122049298, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 313499794 and 313499803.

It is not a weakly prime, because it can be changed into another prime (313499803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156749921 + 156749922.

It is an arithmetic number, because the mean of its divisors is an integer number (156749922).

Almost surely, 2^313499843 is an apocalyptic number.

313499843 is a deficient number, since it is larger than the sum of its proper divisors (1).

313499843 is an equidigital number, since it uses as much as digits as its factorization.

313499843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 44.

The square root of 313499843 is about 17705.9267760826. The cubic root of 313499843 is about 679.3273647133.

The spelling of 313499843 in words is "three hundred thirteen million, four hundred ninety-nine thousand, eight hundred forty-three".