23148857 has 2 divisors, whose sum is σ = 23148858. Its totient is φ = 23148856.

The previous prime is 23148809. The next prime is 23148869. The reversal of 23148857 is 75884132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23145721 + 3136 = 4811^2 + 56^2 .

It is a cyclic number.

It is not a de Polignac number, because 23148857 - 2⁶ = 23148793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23148857.

It is not a weakly prime, because it can be changed into another prime (23148877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11574428 + 11574429.

It is an arithmetic number, because the mean of its divisors is an integer number (11574429).

Almost surely, 2^23148857 is an apocalyptic number.

It is an amenable number.

23148857 is a deficient number, since it is larger than the sum of its proper divisors (1).

23148857 is an equidigital number, since it uses as much as digits as its factorization.

23148857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53760, while the sum is 38.

The square root of 23148857 is about 4811.3259087283. The cubic root of 23148857 is about 284.9989001702.

The spelling of 23148857 in words is "twenty-three million, one hundred forty-eight thousand, eight hundred fifty-seven".