215048104309 has 2 divisors, whose sum is σ = 215048104310. Its totient is φ = 215048104308.

The previous prime is 215048104303. The next prime is 215048104331. The reversal of 215048104309 is 903401840512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134068019409 + 80980084900 = 366153^2 + 284570^2 .

It is a cyclic number.

It is not a de Polignac number, because 215048104309 - 2⁵ = 215048104277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215048104303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107524052154 + 107524052155.

It is an arithmetic number, because the mean of its divisors is an integer number (107524052155).

Almost surely, 2^215048104309 is an apocalyptic number.

It is an amenable number.

215048104309 is a deficient number, since it is larger than the sum of its proper divisors (1).

215048104309 is an equidigital number, since it uses as much as digits as its factorization.

215048104309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 215048104309 in words is "two hundred fifteen billion, forty-eight million, one hundred four thousand, three hundred nine".