2316557021 has 2 divisors, whose sum is σ = 2316557022. Its totient is φ = 2316557020.

The previous prime is 2316557011. The next prime is 2316557029. The reversal of 2316557021 is 1207556132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2245812100 + 70744921 = 47390^2 + 8411^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2316557021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2316557029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1158278510 + 1158278511.

It is an arithmetic number, because the mean of its divisors is an integer number (1158278511).

Almost surely, 2^2316557021 is an apocalyptic number.

It is an amenable number.

2316557021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2316557021 is an equidigital number, since it uses as much as digits as its factorization.

2316557021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 2316557021 is about 48130.6245648236. The cubic root of 2316557021 is about 1323.1659963414.

The spelling of 2316557021 in words is "two billion, three hundred sixteen million, five hundred fifty-seven thousand, twenty-one".