23271091 has 2 divisors, whose sum is σ = 23271092. Its totient is φ = 23271090.

The previous prime is 23271089. The next prime is 23271119. The reversal of 23271091 is 19017232.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23271091 - 2¹ = 23271089 is a prime.

Together with 23271089, it forms a pair of twin primes.

It is equal to p_1464208 and since 23271091 and 1464208 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (23271071) 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, 11635545 + 11635546.

It is an arithmetic number, because the mean of its divisors is an integer number (11635546).

Almost surely, 2^23271091 is an apocalyptic number.

23271091 is a deficient number, since it is larger than the sum of its proper divisors (1).

23271091 is an equidigital number, since it uses as much as digits as its factorization.

23271091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 23271091 is about 4824.0119195541. The cubic root of 23271091 is about 285.4996508615.

The spelling of 23271091 in words is "twenty-three million, two hundred seventy-one thousand, ninety-one".