21432314 has 8 divisors (see below), whose sum is σ = 32449248. Its totient is φ = 10615900.

The previous prime is 21432311. The next prime is 21432317. The reversal of 21432314 is 41323412.

It is an interprime number because it is at equal distance from previous prime (21432311) and next prime (21432317).

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

It is not an unprimeable number, because it can be changed into a prime (21432311) 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, 49862 + ... + 50289.

It is an arithmetic number, because the mean of its divisors is an integer number (4056156).

Almost surely, 2^21432314 is an apocalyptic number.

21432314 is a deficient number, since it is larger than the sum of its proper divisors (11016934).

21432314 is a wasteful number, since it uses less digits than its factorization.

21432314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100260.

The product of its digits is 576, while the sum is 20.

The square root of 21432314 is about 4629.5047251299. The cubic root of 21432314 is about 277.7727815753.

Adding to 21432314 its reverse (41323412), we get a palindrome (62755726).

It can be divided in two parts, 214 and 32314, that multiplied together give a palindrome (6915196).

The spelling of 21432314 in words is "twenty-one million, four hundred thirty-two thousand, three hundred fourteen".