123316939 has 2 divisors, whose sum is σ = 123316940. Its totient is φ = 123316938.

The previous prime is 123316931. The next prime is 123316969. The reversal of 123316939 is 939613321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123316939 - 2³ = 123316931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123316898 and 123316907.

It is not a weakly prime, because it can be changed into another prime (123316931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61658469 + 61658470.

It is an arithmetic number, because the mean of its divisors is an integer number (61658470).

Almost surely, 2^123316939 is an apocalyptic number.

123316939 is a deficient number, since it is larger than the sum of its proper divisors (1).

123316939 is an equidigital number, since it uses as much as digits as its factorization.

123316939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26244, while the sum is 37.

The square root of 123316939 is about 11104.8160272919. The cubic root of 123316939 is about 497.7457708418.

The spelling of 123316939 in words is "one hundred twenty-three million, three hundred sixteen thousand, nine hundred thirty-nine".