123308387 has 2 divisors, whose sum is σ = 123308388. Its totient is φ = 123308386.

The previous prime is 123308371. The next prime is 123308399. The reversal of 123308387 is 783803321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123308387 - 2⁴ = 123308371 is a prime.

It is not a weakly prime, because it can be changed into another prime (123308287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61654193 + 61654194.

It is an arithmetic number, because the mean of its divisors is an integer number (61654194).

Almost surely, 2^123308387 is an apocalyptic number.

123308387 is a deficient number, since it is larger than the sum of its proper divisors (1).

123308387 is an equidigital number, since it uses as much as digits as its factorization.

123308387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 123308387 is about 11104.4309624582. The cubic root of 123308387 is about 497.7342643927.

The spelling of 123308387 in words is "one hundred twenty-three million, three hundred eight thousand, three hundred eighty-seven".