23040091 has 2 divisors, whose sum is σ = 23040092. Its totient is φ = 23040090.

The previous prime is 23040077. The next prime is 23040109. The reversal of 23040091 is 19004032.

Together with next prime (23040109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23040091 - 2⁷ = 23039963 is a prime.

It is not a weakly prime, because it can be changed into another prime (23040071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11520045 + 11520046.

It is an arithmetic number, because the mean of its divisors is an integer number (11520046).

Almost surely, 2^23040091 is an apocalyptic number.

23040091 is a deficient number, since it is larger than the sum of its proper divisors (1).

23040091 is an equidigital number, since it uses as much as digits as its factorization.

23040091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 23040091 is about 4800.0094791573. The cubic root of 23040091 is about 284.5518389852.

The spelling of 23040091 in words is "twenty-three million, forty thousand, ninety-one".