21941343 has 12 divisors (see below), whose sum is σ = 32140368. Its totient is φ = 14421120.

The previous prime is 21941329. The next prime is 21941351. The reversal of 21941343 is 34314912.

It is not a de Polignac number, because 21941343 - 2⁴ = 21941327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21941393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16530 + ... + 17807.

It is an arithmetic number, because the mean of its divisors is an integer number (2678364).

Almost surely, 2^21941343 is an apocalyptic number.

21941343 is a deficient number, since it is larger than the sum of its proper divisors (10199025).

21941343 is a wasteful number, since it uses less digits than its factorization.

21941343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34414 (or 34411 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 21941343 is about 4684.1587291636. The cubic root of 21941343 is about 279.9546822916.

The spelling of 21941343 in words is "twenty-one million, nine hundred forty-one thousand, three hundred forty-three".