11311100043 has 4 divisors (see below), whose sum is σ = 15081466728. Its totient is φ = 7540733360.

The previous prime is 11311100023. The next prime is 11311100069. The reversal of 11311100043 is 34000111311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34000111311 = 3 ⋅11333370437.

It is a cyclic number.

It is not a de Polignac number, because 11311100043 - 2¹⁴ = 11311083659 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11311099995 and 11311100031.

It is not an unprimeable number, because it can be changed into a prime (11311100023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1885183338 + ... + 1885183343.

It is an arithmetic number, because the mean of its divisors is an integer number (3770366682).

Almost surely, 2^11311100043 is an apocalyptic number.

11311100043 is a deficient number, since it is larger than the sum of its proper divisors (3770366685).

11311100043 is an equidigital number, since it uses as much as digits as its factorization.

11311100043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3770366684.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11311100043 its reverse (34000111311), we get a palindrome (45311211354).

The spelling of 11311100043 in words is "eleven billion, three hundred eleven million, one hundred thousand, forty-three".