23145791 has 2 divisors, whose sum is σ = 23145792. Its totient is φ = 23145790.

The previous prime is 23145713. The next prime is 23145817. The reversal of 23145791 is 19754132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23145791 - 2¹⁰ = 23144767 is a prime.

It is a Chen prime.

It is equal to p_1456826 and since 23145791 and 1456826 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 (23145391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11572895 + 11572896.

It is an arithmetic number, because the mean of its divisors is an integer number (11572896).

Almost surely, 2^23145791 is an apocalyptic number.

23145791 is a deficient number, since it is larger than the sum of its proper divisors (1).

23145791 is an equidigital number, since it uses as much as digits as its factorization.

23145791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 32.

The square root of 23145791 is about 4811.0072749893. The cubic root of 23145791 is about 284.9863171845.

The spelling of 23145791 in words is "twenty-three million, one hundred forty-five thousand, seven hundred ninety-one".