1131320311223 has 4 divisors (see below), whose sum is σ = 1131322673880. Its totient is φ = 1131317948568.

The previous prime is 1131320311201. The next prime is 1131320311241. The reversal of 1131320311223 is 3221130231311.

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 1131320311223 - 2²² = 1131316116919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180365 + ... + 1514982.

It is an arithmetic number, because the mean of its divisors is an integer number (282830668470).

Almost surely, 2^{1131320311223} is an apocalyptic number.

1131320311223 is a deficient number, since it is larger than the sum of its proper divisors (2362657).

1131320311223 is an equidigital number, since it uses as much as digits as its factorization.

1131320311223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2362656.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1131320311223 its reverse (3221130231311), we get a palindrome (4352450542534).

The spelling of 1131320311223 in words is "one trillion, one hundred thirty-one billion, three hundred twenty million, three hundred eleven thousand, two hundred twenty-three".