21313312230239 has 2 divisors, whose sum is σ = 21313312230240. Its totient is φ = 21313312230238.

The previous prime is 21313312230191. The next prime is 21313312230283. The reversal of 21313312230239 is 93203221331312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21313312230239 - 2³² = 21309017262943 is a prime.

It is a super-2 number, since 2×21313312230239² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21313312230199 and 21313312230208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21313312230139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10656656115119 + 10656656115120.

It is an arithmetic number, because the mean of its divisors is an integer number (10656656115120).

Almost surely, 2^{21313312230239} is an apocalyptic number.

21313312230239 is a deficient number, since it is larger than the sum of its proper divisors (1).

21313312230239 is an equidigital number, since it uses as much as digits as its factorization.

21313312230239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 35.

The spelling of 21313312230239 in words is "twenty-one trillion, three hundred thirteen billion, three hundred twelve million, two hundred thirty thousand, two hundred thirty-nine".