11421343 has 4 divisors (see below), whose sum is σ = 11430720. Its totient is φ = 11411968.

The previous prime is 11421323. The next prime is 11421353. The reversal of 11421343 is 34312411.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 34312411 = 7 ⋅4901773.

It is a cyclic number.

It is not a de Polignac number, because 11421343 - 2¹⁷ = 11290271 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11421343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11421323) 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, 2530 + ... + 5407.

It is an arithmetic number, because the mean of its divisors is an integer number (2857680).

Almost surely, 2^11421343 is an apocalyptic number.

11421343 is a deficient number, since it is larger than the sum of its proper divisors (9377).

11421343 is an equidigital number, since it uses as much as digits as its factorization.

11421343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9376.

The product of its digits is 288, while the sum is 19.

The square root of 11421343 is about 3379.5477508093. The cubic root of 11421343 is about 225.2020768927.

Adding to 11421343 its reverse (34312411), we get a palindrome (45733754).

It can be divided in two parts, 1142 and 1343, that added together give a triangular number (2485 = T₇₀).

The spelling of 11421343 in words is "eleven million, four hundred twenty-one thousand, three hundred forty-three".