23132287 has 2 divisors, whose sum is σ = 23132288. Its totient is φ = 23132286.

The previous prime is 23132281. The next prime is 23132303. The reversal of 23132287 is 78223132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23132287 - 2³ = 23132279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23132281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11566143 + 11566144.

It is an arithmetic number, because the mean of its divisors is an integer number (11566144).

Almost surely, 2^23132287 is an apocalyptic number.

23132287 is a deficient number, since it is larger than the sum of its proper divisors (1).

23132287 is an equidigital number, since it uses as much as digits as its factorization.

23132287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 28.

The square root of 23132287 is about 4809.6036219215. The cubic root of 23132287 is about 284.9308830034.

The spelling of 23132287 in words is "twenty-three million, one hundred thirty-two thousand, two hundred eighty-seven".