23172371 has 2 divisors, whose sum is σ = 23172372. Its totient is φ = 23172370.

The previous prime is 23172367. The next prime is 23172379. The reversal of 23172371 is 17327132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23172371 - 2² = 23172367 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23172371.

It is not a weakly prime, because it can be changed into another prime (23172379) 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, 11586185 + 11586186.

It is an arithmetic number, because the mean of its divisors is an integer number (11586186).

Almost surely, 2^23172371 is an apocalyptic number.

23172371 is a deficient number, since it is larger than the sum of its proper divisors (1).

23172371 is an equidigital number, since it uses as much as digits as its factorization.

23172371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1764, while the sum is 26.

The square root of 23172371 is about 4813.7688976518. The cubic root of 23172371 is about 285.0953656438.

The spelling of 23172371 in words is "twenty-three million, one hundred seventy-two thousand, three hundred seventy-one".