1123023199 has 4 divisors (see below), whose sum is σ = 1125459720. Its totient is φ = 1120586680.

The previous prime is 1123023197. The next prime is 1123023203. The reversal of 1123023199 is 9913203211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9913203211 = 379 ⋅26156209.

It is a cyclic number.

It is not a de Polignac number, because 1123023199 - 2¹ = 1123023197 is a prime.

It is a super-2 number, since 2×1123023199² = 2522362210984387202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1123023199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123023193) 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, 1217569 + ... + 1218490.

It is an arithmetic number, because the mean of its divisors is an integer number (281364930).

Almost surely, 2^1123023199 is an apocalyptic number.

1123023199 is a deficient number, since it is larger than the sum of its proper divisors (2436521).

1123023199 is an equidigital number, since it uses as much as digits as its factorization.

1123023199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2436520.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 1123023199 is about 33511.5382965330. The cubic root of 1123023199 is about 1039.4323822579.

The spelling of 1123023199 in words is "one billion, one hundred twenty-three million, twenty-three thousand, one hundred ninety-nine".