1123123133 has 16 divisors (see below), whose sum is σ = 1243577664. Its totient is φ = 1005826560.

The previous prime is 1123123081. The next prime is 1123123213. The reversal of 1123123133 is 3313213211.

It is a cyclic number.

It is not a de Polignac number, because 1123123133 - 2¹⁰ = 1123122109 is a prime.

It is a super-3 number, since 3×1123123133³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123123933) 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, 239891 + ... + 244527.

It is an arithmetic number, because the mean of its divisors is an integer number (77723604).

Almost surely, 2^1123123133 is an apocalyptic number.

It is an amenable number.

1123123133 is a deficient number, since it is larger than the sum of its proper divisors (120454531).

1123123133 is a wasteful number, since it uses less digits than its factorization.

1123123133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4972.

The product of its digits is 324, while the sum is 20.

The square root of 1123123133 is about 33513.0293020491. The cubic root of 1123123133 is about 1039.4632131896.

Adding to 1123123133 its reverse (3313213211), we get a palindrome (4436336344).

The spelling of 1123123133 in words is "one billion, one hundred twenty-three million, one hundred twenty-three thousand, one hundred thirty-three".