23243287 has 2 divisors, whose sum is σ = 23243288. Its totient is φ = 23243286.

The previous prime is 23243249. The next prime is 23243293. The reversal of 23243287 is 78234232.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23243287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23243387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11621643 + 11621644.

It is an arithmetic number, because the mean of its divisors is an integer number (11621644).

Almost surely, 2^23243287 is an apocalyptic number.

23243287 is a deficient number, since it is larger than the sum of its proper divisors (1).

23243287 is an equidigital number, since it uses as much as digits as its factorization.

23243287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 31.

The square root of 23243287 is about 4821.1292245697. The cubic root of 23243287 is about 285.3859017781.

The spelling of 23243287 in words is "twenty-three million, two hundred forty-three thousand, two hundred eighty-seven".