123328957 has 2 divisors, whose sum is σ = 123328958. Its totient is φ = 123328956.

The previous prime is 123328951. The next prime is 123328963. The reversal of 123328957 is 759823321.

It is a balanced prime because it is at equal distance from previous prime (123328951) and next prime (123328963).

It can be written as a sum of positive squares in only one way, i.e., 80478841 + 42850116 = 8971^2 + 6546^2 .

It is an emirp because it is prime and its reverse (759823321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123328957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123328951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61664478 + 61664479.

It is an arithmetic number, because the mean of its divisors is an integer number (61664479).

Almost surely, 2^123328957 is an apocalyptic number.

It is an amenable number.

123328957 is a deficient number, since it is larger than the sum of its proper divisors (1).

123328957 is an equidigital number, since it uses as much as digits as its factorization.

123328957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The square root of 123328957 is about 11105.3571306825. The cubic root of 123328957 is about 497.7619397866.

The spelling of 123328957 in words is "one hundred twenty-three million, three hundred twenty-eight thousand, nine hundred fifty-seven".