123312232223309 has 4 divisors (see below), whose sum is σ = 123629230249980. Its totient is φ = 122995234196640.

The previous prime is 123312232223263. The next prime is 123312232223317. The reversal of 123312232223309 is 903322232213321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46060613519209 + 77251618704100 = 6786797^2 + 8789290^2 .

It is a cyclic number.

It is not a de Polignac number, because 123312232223309 - 2¹⁶ = 123312232157773 is a prime.

It is a super-3 number, since 3×123312232223309³ (a number of 43 digits) contains 333 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 (123312232223329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158499012752 + ... + 158499013529.

It is an arithmetic number, because the mean of its divisors is an integer number (30907307562495).

Almost surely, 2^{123312232223309} is an apocalyptic number.

It is an amenable number.

123312232223309 is a deficient number, since it is larger than the sum of its proper divisors (316998026671).

123312232223309 is an equidigital number, since it uses as much as digits as its factorization.

123312232223309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316998026670.

The product of its (nonzero) digits is 139968, while the sum is 38.

The spelling of 123312232223309 in words is "one hundred twenty-three trillion, three hundred twelve billion, two hundred thirty-two million, two hundred twenty-three thousand, three hundred nine".