2315987279 has 2 divisors, whose sum is σ = 2315987280. Its totient is φ = 2315987278.

The previous prime is 2315987251. The next prime is 2315987321. The reversal of 2315987279 is 9727895132.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2315987279 - 2²⁴ = 2299210063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2315987279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2315987209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1157993639 + 1157993640.

It is an arithmetic number, because the mean of its divisors is an integer number (1157993640).

Almost surely, 2^2315987279 is an apocalyptic number.

2315987279 is a deficient number, since it is larger than the sum of its proper divisors (1).

2315987279 is an equidigital number, since it uses as much as digits as its factorization.

2315987279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 53.

The square root of 2315987279 is about 48124.7054952028. The cubic root of 2315987279 is about 1323.0575127822.

The spelling of 2315987279 in words is "two billion, three hundred fifteen million, nine hundred eighty-seven thousand, two hundred seventy-nine".