21343127 has 8 divisors (see below), whose sum is σ = 23071776. Its totient is φ = 19626912.

The previous prime is 21343111. The next prime is 21343129. The reversal of 21343127 is 72134312.

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

It is a cyclic number.

It is not a de Polignac number, because 21343127 - 2⁴ = 21343111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21343129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638 + ... + 6564.

It is an arithmetic number, because the mean of its divisors is an integer number (2883972).

Almost surely, 2^21343127 is an apocalyptic number.

21343127 is a deficient number, since it is larger than the sum of its proper divisors (1728649).

21343127 is a wasteful number, since it uses less digits than its factorization.

21343127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6217.

The product of its digits is 1008, while the sum is 23.

The square root of 21343127 is about 4619.8622273830. The cubic root of 21343127 is about 277.3869441798.

Adding to 21343127 its reverse (72134312), we get a palindrome (93477439).

The spelling of 21343127 in words is "twenty-one million, three hundred forty-three thousand, one hundred twenty-seven".