23919143 has 2 divisors, whose sum is σ = 23919144. Its totient is φ = 23919142.

The previous prime is 23919139. The next prime is 23919151. The reversal of 23919143 is 34191932.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23919143 - 2² = 23919139 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23919163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11959571 + 11959572.

It is an arithmetic number, because the mean of its divisors is an integer number (11959572).

Almost surely, 2^23919143 is an apocalyptic number.

23919143 is a deficient number, since it is larger than the sum of its proper divisors (1).

23919143 is an equidigital number, since it uses as much as digits as its factorization.

23919143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 32.

The square root of 23919143 is about 4890.7200901299. The cubic root of 23919143 is about 288.1256163378.

The spelling of 23919143 in words is "twenty-three million, nine hundred nineteen thousand, one hundred forty-three".