2315987393 has 2 divisors, whose sum is σ = 2315987394. Its totient is φ = 2315987392.

The previous prime is 2315987389. The next prime is 2315987407. The reversal of 2315987393 is 3937895132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1308051889 + 1007935504 = 36167^2 + 31748^2 .

It is a cyclic number.

It is not a de Polignac number, because 2315987393 - 2² = 2315987389 is a prime.

It is not a weakly prime, because it can be changed into another prime (2315987893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1157993696 + 1157993697.

It is an arithmetic number, because the mean of its divisors is an integer number (1157993697).

Almost surely, 2^2315987393 is an apocalyptic number.

It is an amenable number.

2315987393 is a deficient number, since it is larger than the sum of its proper divisors (1).

2315987393 is an equidigital number, since it uses as much as digits as its factorization.

2315987393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 50.

The square root of 2315987393 is about 48124.7066796256. The cubic root of 2315987393 is about 1323.0575344905.

The spelling of 2315987393 in words is "two billion, three hundred fifteen million, nine hundred eighty-seven thousand, three hundred ninety-three".