1123423181443 has 4 divisors (see below), whose sum is σ = 1123467416968. Its totient is φ = 1123378945920.

The previous prime is 1123423181369. The next prime is 1123423181471. The reversal of 1123423181443 is 3441813243211.

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 1123423181443 - 2⁹ = 1123423180931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123423281443) 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, 22079646 + ... + 22130467.

It is an arithmetic number, because the mean of its divisors is an integer number (280866854242).

Almost surely, 2^{1123423181443} is an apocalyptic number.

1123423181443 is a deficient number, since it is larger than the sum of its proper divisors (44235525).

1123423181443 is an equidigital number, since it uses as much as digits as its factorization.

1123423181443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44235524.

The product of its digits is 55296, while the sum is 37.

The spelling of 1123423181443 in words is "one trillion, one hundred twenty-three billion, four hundred twenty-three million, one hundred eighty-one thousand, four hundred forty-three".