20943323 has 2 divisors, whose sum is σ = 20943324. Its totient is φ = 20943322.

The previous prime is 20943319. The next prime is 20943359. The reversal of 20943323 is 32334902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20943323 - 2² = 20943319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20943292 and 20943301.

It is not a weakly prime, because it can be changed into another prime (20943023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10471661 + 10471662.

It is an arithmetic number, because the mean of its divisors is an integer number (10471662).

Almost surely, 2^20943323 is an apocalyptic number.

20943323 is a deficient number, since it is larger than the sum of its proper divisors (1).

20943323 is an equidigital number, since it uses as much as digits as its factorization.

20943323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 20943323 is about 4576.3875491483. The cubic root of 20943323 is about 275.6439915579.

The spelling of 20943323 in words is "twenty million, nine hundred forty-three thousand, three hundred twenty-three".