123997 has 2 divisors, whose sum is σ = 123998. Its totient is φ = 123996.

The previous prime is 123989. The next prime is 124001. The reversal of 123997 is 799321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89401 + 34596 = 299^2 + 186^2 .

It is a cyclic number.

It is not a de Polignac number, because 123997 - 2³ = 123989 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 (123397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61998 + 61999.

It is an arithmetic number, because the mean of its divisors is an integer number (61999).

2¹²³⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

123997 is a deficient number, since it is larger than the sum of its proper divisors (1).

123997 is an equidigital number, since it uses as much as digits as its factorization.

123997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3402, while the sum is 31.

The square root of 123997 is about 352.1320774937. The cubic root of 123997 is about 49.8659073715.

The spelling of 123997 in words is "one hundred twenty-three thousand, nine hundred ninety-seven".