21134341 has 4 divisors (see below), whose sum is σ = 21245184. Its totient is φ = 21023500.

The previous prime is 21134293. The next prime is 21134353. The reversal of 21134341 is 14343112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21134341 - 2⁹ = 21133829 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 (21134941) 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, 55135 + ... + 55516.

It is an arithmetic number, because the mean of its divisors is an integer number (5311296).

Almost surely, 2^21134341 is an apocalyptic number.

It is an amenable number.

21134341 is a deficient number, since it is larger than the sum of its proper divisors (110843).

21134341 is a wasteful number, since it uses less digits than its factorization.

21134341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110842.

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

The square root of 21134341 is about 4597.2101322432. The cubic root of 21134341 is about 276.4794796784.

Adding to 21134341 its reverse (14343112), we get a palindrome (35477453).

The spelling of 21134341 in words is "twenty-one million, one hundred thirty-four thousand, three hundred forty-one".