23040247 has 2 divisors, whose sum is σ = 23040248. Its totient is φ = 23040246.

The previous prime is 23040229. The next prime is 23040263. The reversal of 23040247 is 74204032.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23040247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23040047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11520123 + 11520124.

It is an arithmetic number, because the mean of its divisors is an integer number (11520124).

Almost surely, 2^23040247 is an apocalyptic number.

23040247 is a deficient number, since it is larger than the sum of its proper divisors (1).

23040247 is an equidigital number, since it uses as much as digits as its factorization.

23040247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 23040247 is about 4800.0257290977. The cubic root of 23040247 is about 284.5524811989.

Adding to 23040247 its reverse (74204032), we get a palindrome (97244279).

The spelling of 23040247 in words is "twenty-three million, forty thousand, two hundred forty-seven".