21023313319 has 2 divisors, whose sum is σ = 21023313320. Its totient is φ = 21023313318.

The previous prime is 21023313301. The next prime is 21023313343. The reversal of 21023313319 is 91331332012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21023313319 - 2⁷ = 21023313191 is a prime.

It is a super-3 number, since 3×21023313319³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21023317319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511656659 + 10511656660.

It is an arithmetic number, because the mean of its divisors is an integer number (10511656660).

Almost surely, 2^21023313319 is an apocalyptic number.

21023313319 is a deficient number, since it is larger than the sum of its proper divisors (1).

21023313319 is an equidigital number, since it uses as much as digits as its factorization.

21023313319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 28.

The spelling of 21023313319 in words is "twenty-one billion, twenty-three million, three hundred thirteen thousand, three hundred nineteen".