13231321123 has 2 divisors, whose sum is σ = 13231321124. Its totient is φ = 13231321122.

The previous prime is 13231321121. The next prime is 13231321163. The reversal of 13231321123 is 32112313231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13231321123 - 2¹ = 13231321121 is a prime.

It is a super-2 number, since 2×13231321123² (a number of 21 digits) contains 22 as substring.

Together with 13231321121, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 13231321094 and 13231321103.

It is not a weakly prime, because it can be changed into another prime (13231321121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6615660561 + 6615660562.

It is an arithmetic number, because the mean of its divisors is an integer number (6615660562).

Almost surely, 2^13231321123 is an apocalyptic number.

13231321123 is a deficient number, since it is larger than the sum of its proper divisors (1).

13231321123 is an equidigital number, since it uses as much as digits as its factorization.

13231321123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 22.

Adding to 13231321123 its reverse (32112313231), we get a palindrome (45343634354).

The spelling of 13231321123 in words is "thirteen billion, two hundred thirty-one million, three hundred twenty-one thousand, one hundred twenty-three".