313539973 has 2 divisors, whose sum is σ = 313539974. Its totient is φ = 313539972.

The previous prime is 313539953. The next prime is 313540039. The reversal of 313539973 is 379935313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 306320004 + 7219969 = 17502^2 + 2687^2 .

It is an emirp because it is prime and its reverse (379935313) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313539973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313539953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156769986 + 156769987.

It is an arithmetic number, because the mean of its divisors is an integer number (156769987).

Almost surely, 2^313539973 is an apocalyptic number.

It is an amenable number.

313539973 is a deficient number, since it is larger than the sum of its proper divisors (1).

313539973 is an equidigital number, since it uses as much as digits as its factorization.

313539973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 229635, while the sum is 43.

The square root of 313539973 is about 17707.0599761790. The cubic root of 313539973 is about 679.3563495700.

The spelling of 313539973 in words is "three hundred thirteen million, five hundred thirty-nine thousand, nine hundred seventy-three".