23042819 has 2 divisors, whose sum is σ = 23042820. Its totient is φ = 23042818.

The previous prime is 23042783. The next prime is 23042869. The reversal of 23042819 is 91824032.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23042819 is a prime.

It is a super-2 number, since 2×23042819² = 1061943014933522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 23042791 and 23042800.

It is not a weakly prime, because it can be changed into another prime (23042869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11521409 + 11521410.

It is an arithmetic number, because the mean of its divisors is an integer number (11521410).

Almost surely, 2^23042819 is an apocalyptic number.

23042819 is a deficient number, since it is larger than the sum of its proper divisors (1).

23042819 is an equidigital number, since it uses as much as digits as its factorization.

23042819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 23042819 is about 4800.2936368518. The cubic root of 23042819 is about 284.5630690737.

The spelling of 23042819 in words is "twenty-three million, forty-two thousand, eight hundred nineteen".