1131131111223 has 16 divisors (see below), whose sum is σ = 1510058793600. Its totient is φ = 753145981536.

The previous prime is 1131131111207. The next prime is 1131131111237. The reversal of 1131131111223 is 3221111311311.

It is not a de Polignac number, because 1131131111223 - 2⁴ = 1131131111207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1131131111223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131131111203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8161461 + ... + 8298897.

It is an arithmetic number, because the mean of its divisors is an integer number (94378674600).

Almost surely, 2^{1131131111223} is an apocalyptic number.

1131131111223 is a deficient number, since it is larger than the sum of its proper divisors (378927682377).

1131131111223 is a wasteful number, since it uses less digits than its factorization.

1131131111223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140846.

The product of its digits is 108, while the sum is 21.

Adding to 1131131111223 its reverse (3221111311311), we get a palindrome (4352242422534).

The spelling of 1131131111223 in words is "one trillion, one hundred thirty-one billion, one hundred thirty-one million, one hundred eleven thousand, two hundred twenty-three".