11271943 has 4 divisors (see below), whose sum is σ = 11298528. Its totient is φ = 11245360.

The previous prime is 11271937. The next prime is 11271947. The reversal of 11271943 is 34917211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34917211 = 7 ⋅4988173.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11271943 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 (11271947) 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, 12646 + ... + 13507.

It is an arithmetic number, because the mean of its divisors is an integer number (2824632).

Almost surely, 2^11271943 is an apocalyptic number.

11271943 is a deficient number, since it is larger than the sum of its proper divisors (26585).

11271943 is an equidigital number, since it uses as much as digits as its factorization.

11271943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26584.

The product of its digits is 1512, while the sum is 28.

The square root of 11271943 is about 3357.3714420660. The cubic root of 11271943 is about 224.2158248826.

The spelling of 11271943 in words is "eleven million, two hundred seventy-one thousand, nine hundred forty-three".