313234393 has 2 divisors, whose sum is σ = 313234394. Its totient is φ = 313234392.

The previous prime is 313234391. The next prime is 313234409. The reversal of 313234393 is 393432313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 313006864 + 227529 = 17692^2 + 477^2 .

It is an emirp because it is prime and its reverse (393432313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 313234393 - 2¹ = 313234391 is a prime.

Together with 313234391, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (313234391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156617196 + 156617197.

It is an arithmetic number, because the mean of its divisors is an integer number (156617197).

Almost surely, 2^313234393 is an apocalyptic number.

It is an amenable number.

313234393 is a deficient number, since it is larger than the sum of its proper divisors (1).

313234393 is an equidigital number, since it uses as much as digits as its factorization.

313234393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 31.

The square root of 313234393 is about 17698.4291110821. The cubic root of 313234393 is about 679.1355747511.

The spelling of 313234393 in words is "three hundred thirteen million, two hundred thirty-four thousand, three hundred ninety-three".