13123312231123 has 2 divisors, whose sum is σ = 13123312231124. Its totient is φ = 13123312231122.

The previous prime is 13123312231121. The next prime is 13123312231129. The reversal of 13123312231123 is 32113221332131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13123312231123 - 2¹ = 13123312231121 is a prime.

It is a super-2 number, since 2×13123312231123² (a number of 27 digits) contains 22 as substring.

Together with 13123312231121, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 13123312231091 and 13123312231100.

It is not a weakly prime, because it can be changed into another prime (13123312231121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6561656115561 + 6561656115562.

It is an arithmetic number, because the mean of its divisors is an integer number (6561656115562).

Almost surely, 2^{13123312231123} is an apocalyptic number.

13123312231123 is a deficient number, since it is larger than the sum of its proper divisors (1).

13123312231123 is an equidigital number, since it uses as much as digits as its factorization.

13123312231123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 28.

Adding to 13123312231123 its reverse (32113221332131), we get a palindrome (45236533563254).

The spelling of 13123312231123 in words is "thirteen trillion, one hundred twenty-three billion, three hundred twelve million, two hundred thirty-one thousand, one hundred twenty-three".