20230919 has 2 divisors, whose sum is σ = 20230920. Its totient is φ = 20230918.

The previous prime is 20230883. The next prime is 20230949. The reversal of 20230919 is 91903202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20230919 - 2¹² = 20226823 is a prime.

It is a super-2 number, since 2×20230919² = 818580167169122, 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 (20230949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10115459 + 10115460.

It is an arithmetic number, because the mean of its divisors is an integer number (10115460).

Almost surely, 2^20230919 is an apocalyptic number.

20230919 is a deficient number, since it is larger than the sum of its proper divisors (1).

20230919 is an equidigital number, since it uses as much as digits as its factorization.

20230919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 20230919 is about 4497.8793892233. The cubic root of 20230919 is about 272.4824509642.

The spelling of 20230919 in words is "twenty million, two hundred thirty thousand, nine hundred nineteen".