215339718323 has 2 divisors, whose sum is σ = 215339718324. Its totient is φ = 215339718322.

The previous prime is 215339718311. The next prime is 215339718359. The reversal of 215339718323 is 323817933512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 215339718323 - 2⁶ = 215339718259 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (215339717323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107669859161 + 107669859162.

It is an arithmetic number, because the mean of its divisors is an integer number (107669859162).

Almost surely, 2^215339718323 is an apocalyptic number.

215339718323 is a deficient number, since it is larger than the sum of its proper divisors (1).

215339718323 is an equidigital number, since it uses as much as digits as its factorization.

215339718323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 816480, while the sum is 47.

The spelling of 215339718323 in words is "two hundred fifteen billion, three hundred thirty-nine million, seven hundred eighteen thousand, three hundred twenty-three".