23074991 has 2 divisors, whose sum is σ = 23074992. Its totient is φ = 23074990.

The previous prime is 23074921. The next prime is 23074993. The reversal of 23074991 is 19947032.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23074991 is a prime.

Together with 23074993, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23074993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11537495 + 11537496.

It is an arithmetic number, because the mean of its divisors is an integer number (11537496).

Almost surely, 2^23074991 is an apocalyptic number.

23074991 is a deficient number, since it is larger than the sum of its proper divisors (1).

23074991 is an equidigital number, since it uses as much as digits as its factorization.

23074991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 23074991 is about 4803.6435130014. The cubic root of 23074991 is about 284.6954415595.

The spelling of 23074991 in words is "twenty-three million, seventy-four thousand, nine hundred ninety-one".