21341343 has 4 divisors (see below), whose sum is σ = 28455128. Its totient is φ = 14227560.

The previous prime is 21341339. The next prime is 21341347. The reversal of 21341343 is 34314312.

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

It is an interprime number because it is at equal distance from previous prime (21341339) and next prime (21341347).

It is not a de Polignac number, because 21341343 - 2² = 21341339 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 (21341347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3556888 + ... + 3556893.

It is an arithmetic number, because the mean of its divisors is an integer number (7113782).

Almost surely, 2^21341343 is an apocalyptic number.

21341343 is a deficient number, since it is larger than the sum of its proper divisors (7113785).

21341343 is an equidigital number, since it uses as much as digits as its factorization.

21341343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7113784.

The product of its digits is 864, while the sum is 21.

The square root of 21341343 is about 4619.6691439972. The cubic root of 21341343 is about 277.3792153515.

Adding to 21341343 its reverse (34314312), we get a palindrome (55655655).

The spelling of 21341343 in words is "twenty-one million, three hundred forty-one thousand, three hundred forty-three".