23311087 has 2 divisors, whose sum is σ = 23311088. Its totient is φ = 23311086.

The previous prime is 23311051. The next prime is 23311091. The reversal of 23311087 is 78011332.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23311087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23311027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11655543 + 11655544.

It is an arithmetic number, because the mean of its divisors is an integer number (11655544).

Almost surely, 2^23311087 is an apocalyptic number.

23311087 is a deficient number, since it is larger than the sum of its proper divisors (1).

23311087 is an equidigital number, since it uses as much as digits as its factorization.

23311087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 23311087 is about 4828.1556520063. The cubic root of 23311087 is about 285.6631198973.

The spelling of 23311087 in words is "twenty-three million, three hundred eleven thousand, eighty-seven".