20943319 has 2 divisors, whose sum is σ = 20943320. Its totient is φ = 20943318.

The previous prime is 20943287. The next prime is 20943323. The reversal of 20943319 is 91334902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20943319 - 2⁵ = 20943287 is a prime.

It is a super-2 number, since 2×20943319² = 877245221471522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20943359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10471659 + 10471660.

It is an arithmetic number, because the mean of its divisors is an integer number (10471660).

Almost surely, 2^20943319 is an apocalyptic number.

20943319 is a deficient number, since it is larger than the sum of its proper divisors (1).

20943319 is an equidigital number, since it uses as much as digits as its factorization.

20943319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 20943319 is about 4576.3871121224. The cubic root of 20943319 is about 275.6439740093.

The spelling of 20943319 in words is "twenty million, nine hundred forty-three thousand, three hundred nineteen".