1131300223123 has 4 divisors (see below), whose sum is σ = 1292914540720. Its totient is φ = 969685905528.

The previous prime is 1131300223093. The next prime is 1131300223177. The reversal of 1131300223123 is 3213220031311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131300223123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131300223094 and 1131300223103.

It is not an unprimeable number, because it can be changed into a prime (1131300223223) 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 3 ways as a sum of consecutive naturals, for example, 80807158788 + ... + 80807158801.

It is an arithmetic number, because the mean of its divisors is an integer number (323228635180).

Almost surely, 2^{1131300223123} is an apocalyptic number.

1131300223123 is a deficient number, since it is larger than the sum of its proper divisors (161614317597).

1131300223123 is an equidigital number, since it uses as much as digits as its factorization.

1131300223123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161614317596.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1131300223123 its reverse (3213220031311), we get a palindrome (4344520254434).

The spelling of 1131300223123 in words is "one trillion, one hundred thirty-one billion, three hundred million, two hundred twenty-three thousand, one hundred twenty-three".