23870191 has 2 divisors, whose sum is σ = 23870192. Its totient is φ = 23870190.

The previous prime is 23870179. The next prime is 23870221. The reversal of 23870191 is 19107832.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23870191 - 2¹⁵ = 23837423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23870131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11935095 + 11935096.

It is an arithmetic number, because the mean of its divisors is an integer number (11935096).

Almost surely, 2^23870191 is an apocalyptic number.

23870191 is a deficient number, since it is larger than the sum of its proper divisors (1).

23870191 is an equidigital number, since it uses as much as digits as its factorization.

23870191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 23870191 is about 4885.7129469505. The cubic root of 23870191 is about 287.9289264882.

The spelling of 23870191 in words is "twenty-three million, eight hundred seventy thousand, one hundred ninety-one".