315422993 has 2 divisors, whose sum is σ = 315422994. Its totient is φ = 315422992.

The previous prime is 315422983. The next prime is 315423029. The reversal of 315422993 is 399224513.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188567824 + 126855169 = 13732^2 + 11263^2 .

It is a cyclic number.

It is not a de Polignac number, because 315422993 - 2⁶ = 315422929 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (315422903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157711496 + 157711497.

It is an arithmetic number, because the mean of its divisors is an integer number (157711497).

Almost surely, 2^315422993 is an apocalyptic number.

It is an amenable number.

315422993 is a deficient number, since it is larger than the sum of its proper divisors (1).

315422993 is an equidigital number, since it uses as much as digits as its factorization.

315422993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 38.

The square root of 315422993 is about 17760.1518293060. The cubic root of 315422993 is about 680.7136344560.

The spelling of 315422993 in words is "three hundred fifteen million, four hundred twenty-two thousand, nine hundred ninety-three".