1131423023111 has 4 divisors (see below), whose sum is σ = 1131431143752. Its totient is φ = 1131414902472.

The previous prime is 1131423023083. The next prime is 1131423023117. The reversal of 1131423023111 is 1113203241311.

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 1131423023111 - 2⁶ = 1131423023047 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 (1131423023117) 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, 3847616 + ... + 4131221.

It is an arithmetic number, because the mean of its divisors is an integer number (282857785938).

Almost surely, 2^{1131423023111} is an apocalyptic number.

1131423023111 is a deficient number, since it is larger than the sum of its proper divisors (8120641).

1131423023111 is an equidigital number, since it uses as much as digits as its factorization.

1131423023111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8120640.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 1131423023111 its reverse (1113203241311), we get a palindrome (2244626264422).

The spelling of 1131423023111 in words is "one trillion, one hundred thirty-one billion, four hundred twenty-three million, twenty-three thousand, one hundred eleven".