21346327 has 4 divisors (see below), whose sum is σ = 21369816. Its totient is φ = 21322840.

The previous prime is 21346313. The next prime is 21346343. The reversal of 21346327 is 72364312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21346327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21346295 and 21346304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21346307) 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, 10324 + ... + 12217.

It is an arithmetic number, because the mean of its divisors is an integer number (5342454).

Almost surely, 2^21346327 is an apocalyptic number.

21346327 is a deficient number, since it is larger than the sum of its proper divisors (23489).

21346327 is an equidigital number, since it uses as much as digits as its factorization.

21346327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23488.

The product of its digits is 6048, while the sum is 28.

The square root of 21346327 is about 4620.2085450767. The cubic root of 21346327 is about 277.4008064701.

The spelling of 21346327 in words is "twenty-one million, three hundred forty-six thousand, three hundred twenty-seven".