28343701213 has 2 divisors, whose sum is σ = 28343701214. Its totient is φ = 28343701212.

The previous prime is 28343701181. The next prime is 28343701219. The reversal of 28343701213 is 31210734382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17371767204 + 10971934009 = 131802^2 + 104747^2 .

It is a cyclic number.

It is not a de Polignac number, because 28343701213 - 2⁵ = 28343701181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28343701219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14171850606 + 14171850607.

It is an arithmetic number, because the mean of its divisors is an integer number (14171850607).

Almost surely, 2^28343701213 is an apocalyptic number.

It is an amenable number.

28343701213 is a deficient number, since it is larger than the sum of its proper divisors (1).

28343701213 is an equidigital number, since it uses as much as digits as its factorization.

28343701213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 34.

The spelling of 28343701213 in words is "twenty-eight billion, three hundred forty-three million, seven hundred one thousand, two hundred thirteen".