315343139 has 2 divisors, whose sum is σ = 315343140. Its totient is φ = 315343138.

The previous prime is 315343117. The next prime is 315343157. The reversal of 315343139 is 931343513.

It is a strong prime.

It is an emirp because it is prime and its reverse (931343513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 315343139 - 2¹⁶ = 315277603 is a prime.

It is not a weakly prime, because it can be changed into another prime (315343739) 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, 157671569 + 157671570.

It is an arithmetic number, because the mean of its divisors is an integer number (157671570).

Almost surely, 2^315343139 is an apocalyptic number.

315343139 is a deficient number, since it is larger than the sum of its proper divisors (1).

315343139 is an equidigital number, since it uses as much as digits as its factorization.

315343139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14580, while the sum is 32.

The square root of 315343139 is about 17757.9035643288. The cubic root of 315343139 is about 680.6561853632.

The spelling of 315343139 in words is "three hundred fifteen million, three hundred forty-three thousand, one hundred thirty-nine".