123957983 has 2 divisors, whose sum is σ = 123957984. Its totient is φ = 123957982.

The previous prime is 123957943. The next prime is 123958001. The reversal of 123957983 is 389759321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123957983 - 2¹² = 123953887 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123957913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61978991 + 61978992.

It is an arithmetic number, because the mean of its divisors is an integer number (61978992).

Almost surely, 2^123957983 is an apocalyptic number.

123957983 is a deficient number, since it is larger than the sum of its proper divisors (1).

123957983 is an equidigital number, since it uses as much as digits as its factorization.

123957983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 47.

The square root of 123957983 is about 11133.6419468205. The cubic root of 123957983 is about 498.6067654006.

The spelling of 123957983 in words is "one hundred twenty-three million, nine hundred fifty-seven thousand, nine hundred eighty-three".