123343999 has 2 divisors, whose sum is σ = 123344000. Its totient is φ = 123343998.

The previous prime is 123343973. The next prime is 123344003. The reversal of 123343999 is 999343321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123343999 - 2⁹ = 123343487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123343399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61671999 + 61672000.

It is an arithmetic number, because the mean of its divisors is an integer number (61672000).

Almost surely, 2^123343999 is an apocalyptic number.

123343999 is a deficient number, since it is larger than the sum of its proper divisors (1).

123343999 is an equidigital number, since it uses as much as digits as its factorization.

123343999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157464, while the sum is 43.

The square root of 123343999 is about 11106.0343507482. The cubic root of 123343999 is about 497.7821757228.

The spelling of 123343999 in words is "one hundred twenty-three million, three hundred forty-three thousand, nine hundred ninety-nine".