21341971 has 8 divisors (see below), whose sum is σ = 24607584. Its totient is φ = 18130560.

The previous prime is 21341951. The next prime is 21341993. The reversal of 21341971 is 17914312.

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

It is not a de Polignac number, because 21341971 - 2¹³ = 21333779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21341911) 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, 12700 + ... + 14281.

It is an arithmetic number, because the mean of its divisors is an integer number (3075948).

Almost surely, 2^21341971 is an apocalyptic number.

21341971 is a deficient number, since it is larger than the sum of its proper divisors (3265613).

21341971 is a wasteful number, since it uses less digits than its factorization.

21341971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27101.

The product of its digits is 1512, while the sum is 28.

The square root of 21341971 is about 4619.7371137328. The cubic root of 21341971 is about 277.3819360868.

The spelling of 21341971 in words is "twenty-one million, three hundred forty-one thousand, nine hundred seventy-one".