1123133209 has 8 divisors (see below), whose sum is σ = 1226802528. Its totient is φ = 1019724960.

The previous prime is 1123133191. The next prime is 1123133233. The reversal of 1123133209 is 9023313211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1123133209 - 2⁵ = 1123133177 is a prime.

It is a super-2 number, since 2×1123133209² = 2522856410317275362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123133269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56212 + ... + 73525.

It is an arithmetic number, because the mean of its divisors is an integer number (153350316).

Almost surely, 2^1123133209 is an apocalyptic number.

It is an amenable number.

1123133209 is a deficient number, since it is larger than the sum of its proper divisors (103669319).

1123133209 is a wasteful number, since it uses less digits than its factorization.

1123133209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130535.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 1123133209 is about 33513.1796313033. The cubic root of 1123133209 is about 1039.4663216644.

The spelling of 1123133209 in words is "one billion, one hundred twenty-three million, one hundred thirty-three thousand, two hundred nine".