123304613 has 4 divisors (see below), whose sum is σ = 123495840. Its totient is φ = 123113388.

The previous prime is 123304603. The next prime is 123304663. The reversal of 123304613 is 316403321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123304613 - 2²⁰ = 122256037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123304603) 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, 94643 + ... + 95936.

It is an arithmetic number, because the mean of its divisors is an integer number (30873960).

Almost surely, 2^123304613 is an apocalyptic number.

It is an amenable number.

123304613 is a deficient number, since it is larger than the sum of its proper divisors (191227).

123304613 is an equidigital number, since it uses as much as digits as its factorization.

123304613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191226.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 123304613 is about 11104.2610289924. The cubic root of 123304613 is about 497.7291864243.

Adding to 123304613 its reverse (316403321), we get a palindrome (439707934).

The spelling of 123304613 in words is "one hundred twenty-three million, three hundred four thousand, six hundred thirteen".