1100040013 has 4 divisors (see below), whose sum is σ = 1101047548. Its totient is φ = 1099032480.

The previous prime is 1100040001. The next prime is 1100040047. The reversal of 1100040013 is 3100400011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3100400011 = 83 ⋅37354217.

It can be written as a sum of positive squares in 2 ways, for example, as 838797444 + 261242569 = 28962^2 + 16163^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100040013 - 2¹⁷ = 1099908941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100040083) 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 3 ways as a sum of consecutive naturals, for example, 502128 + ... + 504313.

It is an arithmetic number, because the mean of its divisors is an integer number (275261887).

Almost surely, 2^1100040013 is an apocalyptic number.

It is an amenable number.

1100040013 is a deficient number, since it is larger than the sum of its proper divisors (1007535).

1100040013 is a wasteful number, since it uses less digits than its factorization.

1100040013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007534.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1100040013 is about 33166.8511167400. The cubic root of 1100040013 is about 1032.2926318574.

Adding to 1100040013 its reverse (3100400011), we get a palindrome (4200440024).

The spelling of 1100040013 in words is "one billion, one hundred million, forty thousand, thirteen".