13331131123 has 4 divisors (see below), whose sum is σ = 13335117480. Its totient is φ = 13327144768.

The previous prime is 13331131109. The next prime is 13331131127. The reversal of 13331131123 is 32113113331.

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 13331131123 - 2²⁹ = 12794260211 is a prime.

It is a super-2 number, since 2×13331131123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13331131094 and 13331131103.

It is not an unprimeable number, because it can be changed into a prime (13331131127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1988158 + ... + 1994851.

It is an arithmetic number, because the mean of its divisors is an integer number (3333779370).

Almost surely, 2^13331131123 is an apocalyptic number.

13331131123 is a deficient number, since it is larger than the sum of its proper divisors (3986357).

13331131123 is an equidigital number, since it uses as much as digits as its factorization.

13331131123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3986356.

The product of its digits is 486, while the sum is 22.

Adding to 13331131123 its reverse (32113113331), we get a palindrome (45444244454).

The spelling of 13331131123 in words is "thirteen billion, three hundred thirty-one million, one hundred thirty-one thousand, one hundred twenty-three".