123243893 has 2 divisors, whose sum is σ = 123243894. Its totient is φ = 123243892.

The previous prime is 123243877. The next prime is 123243943. The reversal of 123243893 is 398342321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69338929 + 53904964 = 8327^2 + 7342^2 .

It is a cyclic number.

It is not a de Polignac number, because 123243893 - 2⁴ = 123243877 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 (123243803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61621946 + 61621947.

It is an arithmetic number, because the mean of its divisors is an integer number (61621947).

Almost surely, 2^123243893 is an apocalyptic number.

It is an amenable number.

123243893 is a deficient number, since it is larger than the sum of its proper divisors (1).

123243893 is an equidigital number, since it uses as much as digits as its factorization.

123243893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 35.

The square root of 123243893 is about 11101.5266067330. The cubic root of 123243893 is about 497.6474725893.

The spelling of 123243893 in words is "one hundred twenty-three million, two hundred forty-three thousand, eight hundred ninety-three".