12011343 has 4 divisors (see below), whose sum is σ = 16015128. Its totient is φ = 8007560.

The previous prime is 12011323. The next prime is 12011357. The reversal of 12011343 is 34311021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12011343 - 2¹⁰ = 12010319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011303) 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, 2001888 + ... + 2001893.

It is an arithmetic number, because the mean of its divisors is an integer number (4003782).

Almost surely, 2^12011343 is an apocalyptic number.

12011343 is a deficient number, since it is larger than the sum of its proper divisors (4003785).

12011343 is an equidigital number, since it uses as much as digits as its factorization.

12011343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4003784.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 12011343 is about 3465.7384494506. The cubic root of 12011343 is about 229.0149618696.

Adding to 12011343 its reverse (34311021), we get a palindrome (46322364).

The spelling of 12011343 in words is "twelve million, eleven thousand, three hundred forty-three".