13231023223309 has 4 divisors (see below), whose sum is σ = 13255479828700. Its totient is φ = 13206566617920.

The previous prime is 13231023223307. The next prime is 13231023223337. The reversal of 13231023223309 is 90332232013231.

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 1995588498409 + 11235434724900 = 1412653^2 + 3351930^2 .

It is a cyclic number.

It is not a de Polignac number, because 13231023223309 - 2¹ = 13231023223307 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 (13231023223307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12228301884 + ... + 12228302965.

It is an arithmetic number, because the mean of its divisors is an integer number (3313869957175).

Almost surely, 2^{13231023223309} is an apocalyptic number.

It is an amenable number.

13231023223309 is a deficient number, since it is larger than the sum of its proper divisors (24456605391).

13231023223309 is an equidigital number, since it uses as much as digits as its factorization.

13231023223309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24456605390.

The product of its (nonzero) digits is 34992, while the sum is 34.

The spelling of 13231023223309 in words is "thirteen trillion, two hundred thirty-one billion, twenty-three million, two hundred twenty-three thousand, three hundred nine".