23201887 has 2 divisors, whose sum is σ = 23201888. Its totient is φ = 23201886.

The previous prime is 23201873. The next prime is 23201891. The reversal of 23201887 is 78810232.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23201887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23201587) 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, 11600943 + 11600944.

It is an arithmetic number, because the mean of its divisors is an integer number (11600944).

Almost surely, 2^23201887 is an apocalyptic number.

23201887 is a deficient number, since it is larger than the sum of its proper divisors (1).

23201887 is an equidigital number, since it uses as much as digits as its factorization.

23201887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 23201887 is about 4816.8337110596. The cubic root of 23201887 is about 285.2163618149.

The spelling of 23201887 in words is "twenty-three million, two hundred one thousand, eight hundred eighty-seven".