1123100109 has 48 divisors (see below), whose sum is σ = 1726612992. Its totient is φ = 702514944.

The previous prime is 1123100071. The next prime is 1123100117. The reversal of 1123100109 is 9010013211.

It is not a de Polignac number, because 1123100109 - 2¹³ = 1123091917 is a prime.

It is a super-2 number, since 2×1123100109² = 2522707709671623762, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1123100091 and 1123100100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123100129) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1142032 + ... + 1143014.

It is an arithmetic number, because the mean of its divisors is an integer number (35971104).

Almost surely, 2^1123100109 is an apocalyptic number.

It is an amenable number.

1123100109 is a deficient number, since it is larger than the sum of its proper divisors (603512883).

1123100109 is a wasteful number, since it uses less digits than its factorization.

1123100109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146 (or 1143 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 1123100109 is about 33512.6857920997. The cubic root of 1123100109 is about 1039.4561101499.

The spelling of 1123100109 in words is "one billion, one hundred twenty-three million, one hundred thousand, one hundred nine".