23997151 has 2 divisors, whose sum is σ = 23997152. Its totient is φ = 23997150.

The previous prime is 23997109. The next prime is 23997163. The reversal of 23997151 is 15179932.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23997151 - 2¹³ = 23988959 is a prime.

It is a super-2 number, since 2×23997151² = 1151726512233602, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23997151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23997101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11998575 + 11998576.

It is an arithmetic number, because the mean of its divisors is an integer number (11998576).

Almost surely, 2^23997151 is an apocalyptic number.

23997151 is a deficient number, since it is larger than the sum of its proper divisors (1).

23997151 is an equidigital number, since it uses as much as digits as its factorization.

23997151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17010, while the sum is 37.

The square root of 23997151 is about 4898.6887020916. The cubic root of 23997151 is about 288.4384998070.

The spelling of 23997151 in words is "twenty-three million, nine hundred ninety-seven thousand, one hundred fifty-one".