123189343 has 4 divisors (see below), whose sum is σ = 123279928. Its totient is φ = 123098760.

The previous prime is 123189337. The next prime is 123189371. The reversal of 123189343 is 343981321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 343981321 = 12619 ⋅27259.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123189343 is a prime.

It is a super-2 number, since 2×123189343² = 30351228457543298, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123189299 and 123189308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123189383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43221 + ... + 45982.

It is an arithmetic number, because the mean of its divisors is an integer number (30819982).

Almost surely, 2^123189343 is an apocalyptic number.

123189343 is a deficient number, since it is larger than the sum of its proper divisors (90585).

123189343 is an equidigital number, since it uses as much as digits as its factorization.

123189343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90584.

The product of its digits is 15552, while the sum is 34.

The square root of 123189343 is about 11099.0694655002. The cubic root of 123189343 is about 497.5740391310.

The spelling of 123189343 in words is "one hundred twenty-three million, one hundred eighty-nine thousand, three hundred forty-three".