123327857 has 2 divisors, whose sum is σ = 123327858. Its totient is φ = 123327856.

The previous prime is 123327851. The next prime is 123327881. The reversal of 123327857 is 758723321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73427761 + 49900096 = 8569^2 + 7064^2 .

It is an emirp because it is prime and its reverse (758723321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123327857 - 2²⁶ = 56218993 is a prime.

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 123327857.

It is not a weakly prime, because it can be changed into another prime (123327851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61663928 + 61663929.

It is an arithmetic number, because the mean of its divisors is an integer number (61663929).

Almost surely, 2^123327857 is an apocalyptic number.

It is an amenable number.

123327857 is a deficient number, since it is larger than the sum of its proper divisors (1).

123327857 is an equidigital number, since it uses as much as digits as its factorization.

123327857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 38.

The square root of 123327857 is about 11105.3076049248. The cubic root of 123327857 is about 497.7604598969.

The spelling of 123327857 in words is "one hundred twenty-three million, three hundred twenty-seven thousand, eight hundred fifty-seven".