21034341 has 6 divisors (see below), whose sum is σ = 30382950. Its totient is φ = 14022888.

The previous prime is 21034331. The next prime is 21034357. The reversal of 21034341 is 14343012.

It can be written as a sum of positive squares in only one way, i.e., 13905441 + 7128900 = 3729^2 + 2670^2 .

It is not a de Polignac number, because 21034341 - 2¹⁰ = 21033317 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21034301) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1168566 + ... + 1168583.

It is an arithmetic number, because the mean of its divisors is an integer number (5063825).

Almost surely, 2^21034341 is an apocalyptic number.

It is an amenable number.

21034341 is a deficient number, since it is larger than the sum of its proper divisors (9348609).

21034341 is a wasteful number, since it uses less digits than its factorization.

21034341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2337155 (or 2337152 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 21034341 is about 4586.3210746741. The cubic root of 21034341 is about 276.0427233800.

Adding to 21034341 its reverse (14343012), we get a palindrome (35377353).

The spelling of 21034341 in words is "twenty-one million, thirty-four thousand, three hundred forty-one".