11331131321123 has 4 divisors (see below), whose sum is σ = 11332351962888. Its totient is φ = 11329910679360.

The previous prime is 11331131321117. The next prime is 11331131321143. The reversal of 11331131321123 is 32112313113311.

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 11331131321123 - 2²⁰ = 11331130272547 is a prime.

It is a super-2 number, since 2×11331131321123² (a number of 27 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 = 11331131321092 and 11331131321101.

It is not an unprimeable number, because it can be changed into a prime (11331131321143) 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, 610306958 + ... + 610325523.

It is an arithmetic number, because the mean of its divisors is an integer number (2833087990722).

Almost surely, 2^{11331131321123} is an apocalyptic number.

11331131321123 is a deficient number, since it is larger than the sum of its proper divisors (1220641765).

11331131321123 is an equidigital number, since it uses as much as digits as its factorization.

11331131321123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220641764.

The product of its digits is 972, while the sum is 26.

Adding to 11331131321123 its reverse (32112313113311), we get a palindrome (43443444434434).

The spelling of 11331131321123 in words is "eleven trillion, three hundred thirty-one billion, one hundred thirty-one million, three hundred twenty-one thousand, one hundred twenty-three".