2315415581 has 2 divisors, whose sum is σ = 2315415582. Its totient is φ = 2315415580.

The previous prime is 2315415551. The next prime is 2315415653. The reversal of 2315415581 is 1855145132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2193423556 + 121992025 = 46834^2 + 11045^2 .

It is a cyclic number.

It is not a de Polignac number, because 2315415581 - 2⁶ = 2315415517 is a prime.

It is a super-2 number, since 2×2315415581² = 10722298625475135122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2315415551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1157707790 + 1157707791.

It is an arithmetic number, because the mean of its divisors is an integer number (1157707791).

Almost surely, 2^2315415581 is an apocalyptic number.

It is an amenable number.

2315415581 is a deficient number, since it is larger than the sum of its proper divisors (1).

2315415581 is an equidigital number, since it uses as much as digits as its factorization.

2315415581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24000, while the sum is 35.

The square root of 2315415581 is about 48118.7653727732. The cubic root of 2315415581 is about 1322.9486388997.

The spelling of 2315415581 in words is "two billion, three hundred fifteen million, four hundred fifteen thousand, five hundred eighty-one".