123313243 has 4 divisors (see below), whose sum is σ = 123335488. Its totient is φ = 123291000.

The previous prime is 123313237. The next prime is 123313259. The reversal of 123313243 is 342313321.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 123313243 - 2⁹ = 123312731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123313213) 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, 4630 + ... + 16372.

It is an arithmetic number, because the mean of its divisors is an integer number (30833872).

Almost surely, 2^123313243 is an apocalyptic number.

123313243 is a deficient number, since it is larger than the sum of its proper divisors (22245).

123313243 is a wasteful number, since it uses less digits than its factorization.

123313243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22244.

The product of its digits is 1296, while the sum is 22.

The square root of 123313243 is about 11104.6496117617. The cubic root of 123313243 is about 497.7407980544.

Adding to 123313243 its reverse (342313321), we get a palindrome (465626564).

The spelling of 123313243 in words is "one hundred twenty-three million, three hundred thirteen thousand, two hundred forty-three".