1100113243 has 16 divisors (see below), whose sum is σ = 1174712320. Its totient is φ = 1027295136.

The previous prime is 1100113237. The next prime is 1100113249. The reversal of 1100113243 is 3423110011.

It is an interprime number because it is at equal distance from previous prime (1100113237) and next prime (1100113249).

It is a cyclic number.

It is not a de Polignac number, because 1100113243 - 2⁵ = 1100113211 is a prime.

It is a super-3 number, since 3×1100113243³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1100113249) 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, 391921 + ... + 394717.

It is an arithmetic number, because the mean of its divisors is an integer number (73419520).

Almost surely, 2^1100113243 is an apocalyptic number.

1100113243 is a deficient number, since it is larger than the sum of its proper divisors (74599077).

1100113243 is a wasteful number, since it uses less digits than its factorization.

1100113243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3106.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1100113243 is about 33167.9550620776. The cubic root of 1100113243 is about 1032.3155380278.

Adding to 1100113243 its reverse (3423110011), we get a palindrome (4523223254).

The spelling of 1100113243 in words is "one billion, one hundred million, one hundred thirteen thousand, two hundred forty-three".