215313021239 has 2 divisors, whose sum is σ = 215313021240. Its totient is φ = 215313021238.

The previous prime is 215313021233. The next prime is 215313021251. The reversal of 215313021239 is 932120313512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 215313021239 - 2¹⁶ = 215312955703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215313021233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107656510619 + 107656510620.

It is an arithmetic number, because the mean of its divisors is an integer number (107656510620).

Almost surely, 2^215313021239 is an apocalyptic number.

215313021239 is a deficient number, since it is larger than the sum of its proper divisors (1).

215313021239 is an equidigital number, since it uses as much as digits as its factorization.

215313021239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 32.

The spelling of 215313021239 in words is "two hundred fifteen billion, three hundred thirteen million, twenty-one thousand, two hundred thirty-nine".