123313239 has 16 divisors (see below), whose sum is σ = 208784640. Its totient is φ = 70464600.

The previous prime is 123313237. The next prime is 123313259. The reversal of 123313239 is 932313321.

123313239 is a `hidden beast` number, since 1 + 2 + 331 + 323 + 9 = 666.

It is not a de Polignac number, because 123313239 - 2¹ = 123313237 is a prime.

It is a super-2 number, since 2×123313239² = 30412309825342242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123313231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326037 + ... + 326414.

It is an arithmetic number, because the mean of its divisors is an integer number (13049040).

Almost surely, 2^123313239 is an apocalyptic number.

123313239 is a deficient number, since it is larger than the sum of its proper divisors (85471401).

123313239 is an equidigital number, since it uses as much as digits as its factorization.

123313239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652467 (or 652461 counting only the distinct ones).

The product of its digits is 2916, while the sum is 27.

The square root of 123313239 is about 11104.6494316570. The cubic root of 123313239 is about 497.7407926725.

The spelling of 123313239 in words is "one hundred twenty-three million, three hundred thirteen thousand, two hundred thirty-nine".