23112919 has 2 divisors, whose sum is σ = 23112920. Its totient is φ = 23112918.

The previous prime is 23112917. The next prime is 23112937. The reversal of 23112919 is 91921132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23112919 - 2¹ = 23112917 is a prime.

It is a super-2 number, since 2×23112919² = 1068414049401122, which contains 22 as substring.

Together with 23112917, it forms a pair of twin primes.

It is equal to p_1454914 and since 23112919 and 1454914 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23112917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11556459 + 11556460.

It is an arithmetic number, because the mean of its divisors is an integer number (11556460).

Almost surely, 2^23112919 is an apocalyptic number.

23112919 is a deficient number, since it is larger than the sum of its proper divisors (1).

23112919 is an equidigital number, since it uses as much as digits as its factorization.

23112919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 28.

The square root of 23112919 is about 4807.5897287518. The cubic root of 23112919 is about 284.8513393158.

The spelling of 23112919 in words is "twenty-three million, one hundred twelve thousand, nine hundred nineteen".