11340343421 has 16 divisors (see below), whose sum is σ = 12528146880. Its totient is φ = 10179016320.

The previous prime is 11340343403. The next prime is 11340343423. The reversal of 11340343421 is 12434304311.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-11340343421 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 (11340343423) 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, 709706 + ... + 725508.

It is an arithmetic number, because the mean of its divisors is an integer number (783009180).

Almost surely, 2^11340343421 is an apocalyptic number.

11340343421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11340343421 is a deficient number, since it is larger than the sum of its proper divisors (1187803459).

11340343421 is a wasteful number, since it uses less digits than its factorization.

11340343421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16636.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 11340343421 its reverse (12434304311), we get a palindrome (23774647732).

The spelling of 11340343421 in words is "eleven billion, three hundred forty million, three hundred forty-three thousand, four hundred twenty-one".