1123223309 has 16 divisors (see below), whose sum is σ = 1239047040. Its totient is φ = 1011890880.

The previous prime is 1123223291. The next prime is 1123223327. The reversal of 1123223309 is 9033223211.

It is an interprime number because it is at equal distance from previous prime (1123223291) and next prime (1123223327).

It is not a de Polignac number, because 1123223309 - 2²⁰ = 1122174733 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123223509) 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, 89024 + ... + 100854.

It is an arithmetic number, because the mean of its divisors is an integer number (77440440).

Almost surely, 2^1123223309 is an apocalyptic number.

It is an amenable number.

1123223309 is a deficient number, since it is larger than the sum of its proper divisors (115823731).

1123223309 is a wasteful number, since it uses less digits than its factorization.

1123223309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12020.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 1123223309 is about 33514.5238516080. The cubic root of 1123223309 is about 1039.4941169460.

The spelling of 1123223309 in words is "one billion, one hundred twenty-three million, two hundred twenty-three thousand, three hundred nine".