313888739 has 2 divisors, whose sum is σ = 313888740. Its totient is φ = 313888738.

The previous prime is 313888727. The next prime is 313888747. The reversal of 313888739 is 937888313.

It is a strong prime.

It is an emirp because it is prime and its reverse (937888313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 313888739 - 2²⁴ = 297111523 is a prime.

It is a super-2 number, since 2×313888739² = 197052280942020242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (313888439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156944369 + 156944370.

It is an arithmetic number, because the mean of its divisors is an integer number (156944370).

Almost surely, 2^313888739 is an apocalyptic number.

313888739 is a deficient number, since it is larger than the sum of its proper divisors (1).

313888739 is an equidigital number, since it uses as much as digits as its factorization.

313888739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 50.

The square root of 313888739 is about 17716.9054577824. The cubic root of 313888739 is about 679.6081501050.

The spelling of 313888739 in words is "three hundred thirteen million, eight hundred eighty-eight thousand, seven hundred thirty-nine".