21701341 has 4 divisors (see below), whose sum is σ = 22230684. Its totient is φ = 21172000.

The previous prime is 21701297. The next prime is 21701371. The reversal of 21701341 is 14310712.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1863225 + 19838116 = 1365^2 + 4454^2 .

It is a cyclic number.

It is not a de Polignac number, because 21701341 - 2⁹ = 21700829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21701371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264610 + ... + 264691.

It is an arithmetic number, because the mean of its divisors is an integer number (5557671).

Almost surely, 2^21701341 is an apocalyptic number.

It is an amenable number.

21701341 is a deficient number, since it is larger than the sum of its proper divisors (529343).

21701341 is an equidigital number, since it uses as much as digits as its factorization.

21701341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529342.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 21701341 is about 4658.4698131468. The cubic root of 21701341 is about 278.9301906937.

The spelling of 21701341 in words is "twenty-one million, seven hundred one thousand, three hundred forty-one".