315056789 has 2 divisors, whose sum is σ = 315056790. Its totient is φ = 315056788.

The previous prime is 315056771. The next prime is 315056809. The reversal of 315056789 is 987650513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 302168689 + 12888100 = 17383^2 + 3590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315056789 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315056719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157528394 + 157528395.

It is an arithmetic number, because the mean of its divisors is an integer number (157528395).

Almost surely, 2^315056789 is an apocalyptic number.

It is an amenable number.

315056789 is a deficient number, since it is larger than the sum of its proper divisors (1).

315056789 is an equidigital number, since it uses as much as digits as its factorization.

315056789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 44.

The square root of 315056789 is about 17749.8391260315. The cubic root of 315056789 is about 680.4500977720.

The spelling of 315056789 in words is "three hundred fifteen million, fifty-six thousand, seven hundred eighty-nine".