21830511323 has 2 divisors, whose sum is σ = 21830511324. Its totient is φ = 21830511322.

The previous prime is 21830511317. The next prime is 21830511379. The reversal of 21830511323 is 32311503812.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21830511323 - 2¹⁶ = 21830445787 is a prime.

It is not a weakly prime, because it can be changed into another prime (21830511383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10915255661 + 10915255662.

It is an arithmetic number, because the mean of its divisors is an integer number (10915255662).

Almost surely, 2^21830511323 is an apocalyptic number.

21830511323 is a deficient number, since it is larger than the sum of its proper divisors (1).

21830511323 is an equidigital number, since it uses as much as digits as its factorization.

21830511323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The spelling of 21830511323 in words is "twenty-one billion, eight hundred thirty million, five hundred eleven thousand, three hundred twenty-three".