13031320231223 has 4 divisors (see below), whose sum is σ = 14892937407120. Its totient is φ = 11169703055328.

The previous prime is 13031320231211. The next prime is 13031320231243. The reversal of 13031320231223 is 32213202313031.

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

It is a cyclic number.

It is not a de Polignac number, because 13031320231223 - 2⁶ = 13031320231159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13031320231192 and 13031320231201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13031320231243) 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, 930808587938 + ... + 930808587951.

It is an arithmetic number, because the mean of its divisors is an integer number (3723234351780).

Almost surely, 2^{13031320231223} is an apocalyptic number.

13031320231223 is a deficient number, since it is larger than the sum of its proper divisors (1861617175897).

13031320231223 is an equidigital number, since it uses as much as digits as its factorization.

13031320231223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861617175896.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 13031320231223 its reverse (32213202313031), we get a palindrome (45244522544254).

The spelling of 13031320231223 in words is "thirteen trillion, thirty-one billion, three hundred twenty million, two hundred thirty-one thousand, two hundred twenty-three".