21341306 has 8 divisors (see below), whose sum is σ = 36585120. Its totient is φ = 9146268.

The previous prime is 21341249. The next prime is 21341317. The reversal of 21341306 is 60314312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 762176 + ... + 762203.

It is an arithmetic number, because the mean of its divisors is an integer number (4573140).

Almost surely, 2^21341306 is an apocalyptic number.

21341306 is a deficient number, since it is larger than the sum of its proper divisors (15243814).

21341306 is a wasteful number, since it uses less digits than its factorization.

21341306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524388.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 21341306 is about 4619.6651393797. The cubic root of 21341306 is about 277.3790550517.

Adding to 21341306 its reverse (60314312), we get a palindrome (81655618).

The spelling of 21341306 in words is "twenty-one million, three hundred forty-one thousand, three hundred six".