1100013123 has 32 divisors (see below), whose sum is σ = 1661264640. Its totient is φ = 641325440.

The previous prime is 1100013053. The next prime is 1100013127. The reversal of 1100013123 is 3213100011.

It is a cyclic number.

It is not a de Polignac number, because 1100013123 - 2¹⁴ = 1099996739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1100013099 and 1100013108.

It is not an unprimeable number, because it can be changed into a prime (1100013127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 278440 + ... + 282362.

It is an arithmetic number, because the mean of its divisors is an integer number (51914520).

Almost surely, 2^1100013123 is an apocalyptic number.

1100013123 is a deficient number, since it is larger than the sum of its proper divisors (561251517).

1100013123 is a wasteful number, since it uses less digits than its factorization.

1100013123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4259.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1100013123 is about 33166.4457396327. The cubic root of 1100013123 is about 1032.2842204740.

Adding to 1100013123 its reverse (3213100011), we get a palindrome (4313113134).

The spelling of 1100013123 in words is "one billion, one hundred million, thirteen thousand, one hundred twenty-three".