315346789 has 2 divisors, whose sum is σ = 315346790. Its totient is φ = 315346788.

The previous prime is 315346763. The next prime is 315346793. The reversal of 315346789 is 987643513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 315346564 + 225 = 17758^2 + 15^2 .

It is a cyclic number.

It is not a de Polignac number, because 315346789 - 2²⁷ = 181129061 is a prime.

It is a super-2 number, since 2×315346789² = 198887194665221042, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315346489) 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, 157673394 + 157673395.

It is an arithmetic number, because the mean of its divisors is an integer number (157673395).

Almost surely, 2^315346789 is an apocalyptic number.

It is an amenable number.

315346789 is a deficient number, since it is larger than the sum of its proper divisors (1).

315346789 is an equidigital number, since it uses as much as digits as its factorization.

315346789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 46.

The square root of 315346789 is about 17758.0063351717. The cubic root of 315346789 is about 680.6588114818.

The spelling of 315346789 in words is "three hundred fifteen million, three hundred forty-six thousand, seven hundred eighty-nine".