23191607 has 2 divisors, whose sum is σ = 23191608. Its totient is φ = 23191606.

The previous prime is 23191591. The next prime is 23191639. The reversal of 23191607 is 70619132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23191607 - 2⁴ = 23191591 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23191607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23191667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11595803 + 11595804.

It is an arithmetic number, because the mean of its divisors is an integer number (11595804).

Almost surely, 2^23191607 is an apocalyptic number.

23191607 is a deficient number, since it is larger than the sum of its proper divisors (1).

23191607 is an equidigital number, since it uses as much as digits as its factorization.

23191607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 23191607 is about 4815.7665018146. The cubic root of 23191607 is about 285.1742322339.

The spelling of 23191607 in words is "twenty-three million, one hundred ninety-one thousand, six hundred seven".