23012291 has 2 divisors, whose sum is σ = 23012292. Its totient is φ = 23012290.

The previous prime is 23012279. The next prime is 23012299. The reversal of 23012291 is 19221032.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23012291 - 2²² = 18817987 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23012299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11506145 + 11506146.

It is an arithmetic number, because the mean of its divisors is an integer number (11506146).

Almost surely, 2^23012291 is an apocalyptic number.

23012291 is a deficient number, since it is larger than the sum of its proper divisors (1).

23012291 is an equidigital number, since it uses as much as digits as its factorization.

23012291 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 20.

The square root of 23012291 is about 4797.1127774944. The cubic root of 23012291 is about 284.4373468903.

It can be divided in two parts, 230 and 12291, that added together give a palindrome (12521).

The spelling of 23012291 in words is "twenty-three million, twelve thousand, two hundred ninety-one".