1131313212223 has 16 divisors (see below), whose sum is σ = 1153532067840. Its totient is φ = 1109313285696.

The previous prime is 1131313212173. The next prime is 1131313212233. The reversal of 1131313212223 is 3222123131311.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131313212223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131313212233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27637990 + ... + 27678892.

It is an arithmetic number, because the mean of its divisors is an integer number (72095754240).

Almost surely, 2^{1131313212223} is an apocalyptic number.

1131313212223 is a deficient number, since it is larger than the sum of its proper divisors (22218855617).

1131313212223 is a wasteful number, since it uses less digits than its factorization.

1131313212223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43566.

The product of its digits is 1296, while the sum is 25.

Adding to 1131313212223 its reverse (3222123131311), we get a palindrome (4353436343534).

The spelling of 1131313212223 in words is "one trillion, one hundred thirty-one billion, three hundred thirteen million, two hundred twelve thousand, two hundred twenty-three".