123323213 has 8 divisors (see below), whose sum is σ = 132949656. Its totient is φ = 113716800.

The previous prime is 123323201. The next prime is 123323227. The reversal of 123323213 is 312323321.

It can be written as a sum of positive squares in 4 ways, for example, as 15225604 + 108097609 = 3902^2 + 10397^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123323213 - 2⁴ = 123323197 is a prime.

It is a super-2 number, since 2×123323213² = 30417229729286738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123323113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9323 + ... + 18263.

It is an arithmetic number, because the mean of its divisors is an integer number (16618707).

Almost surely, 2^123323213 is an apocalyptic number.

123323213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

123323213 is a deficient number, since it is larger than the sum of its proper divisors (9626443).

123323213 is a wasteful number, since it uses less digits than its factorization.

123323213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10015.

The product of its digits is 648, while the sum is 20.

The square root of 123323213 is about 11105.0985137458. The cubic root of 123323213 is about 497.7542119747.

Adding to 123323213 its reverse (312323321), we get a palindrome (435646534).

It can be divided in two parts, 1233232 and 13, that multiplied together give a square (16032016 = 4004²).

The spelling of 123323213 in words is "one hundred twenty-three million, three hundred twenty-three thousand, two hundred thirteen".