1131231322223 has 4 divisors (see below), whose sum is σ = 1131316653480. Its totient is φ = 1131145990968.

The previous prime is 1131231322211. The next prime is 1131231322253. The reversal of 1131231322223 is 3222231321311.

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 1131231322223 - 2²⁰ = 1131230273647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131231322192 and 1131231322201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131231322253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42645740 + ... + 42672257.

It is an arithmetic number, because the mean of its divisors is an integer number (282829163370).

Almost surely, 2^{1131231322223} is an apocalyptic number.

1131231322223 is a deficient number, since it is larger than the sum of its proper divisors (85331257).

1131231322223 is an equidigital number, since it uses as much as digits as its factorization.

1131231322223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85331256.

The product of its digits is 2592, while the sum is 26.

Adding to 1131231322223 its reverse (3222231321311), we get a palindrome (4353462643534).

The spelling of 1131231322223 in words is "one trillion, one hundred thirty-one billion, two hundred thirty-one million, three hundred twenty-two thousand, two hundred twenty-three".