20854319 has 2 divisors, whose sum is σ = 20854320. Its totient is φ = 20854318.

The previous prime is 20854313. The next prime is 20854357. The reversal of 20854319 is 91345802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20854319 - 2⁸ = 20854063 is a prime.

It is a super-2 number, since 2×20854319² = 869805241907522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20854313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10427159 + 10427160.

It is an arithmetic number, because the mean of its divisors is an integer number (10427160).

Almost surely, 2^20854319 is an apocalyptic number.

20854319 is a deficient number, since it is larger than the sum of its proper divisors (1).

20854319 is an equidigital number, since it uses as much as digits as its factorization.

20854319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 20854319 is about 4566.6529318528. The cubic root of 20854319 is about 275.2529639292.

The spelling of 20854319 in words is "twenty million, eight hundred fifty-four thousand, three hundred nineteen".