2315510243 has 2 divisors, whose sum is σ = 2315510244. Its totient is φ = 2315510242.

The previous prime is 2315510237. The next prime is 2315510251. The reversal of 2315510243 is 3420155132.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2315510243 - 2¹⁸ = 2315248099 is a prime.

It is not a weakly prime, because it can be changed into another prime (2315510203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1157755121 + 1157755122.

It is an arithmetic number, because the mean of its divisors is an integer number (1157755122).

Almost surely, 2^2315510243 is an apocalyptic number.

2315510243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2315510243 is an equidigital number, since it uses as much as digits as its factorization.

2315510243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 2315510243 is about 48119.7489914484. The cubic root of 2315510243 is about 1322.9666675218.

Adding to 2315510243 its reverse (3420155132), we get a palindrome (5735665375).

The spelling of 2315510243 in words is "two billion, three hundred fifteen million, five hundred ten thousand, two hundred forty-three".