21314234 has 8 divisors (see below), whose sum is σ = 32356800. Its totient is φ = 10528636.

The previous prime is 21314233. The next prime is 21314269. The reversal of 21314234 is 43241312.

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 (21314231) 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, 64034 + ... + 64365.

It is an arithmetic number, because the mean of its divisors is an integer number (4044600).

Almost surely, 2^21314234 is an apocalyptic number.

21314234 is a deficient number, since it is larger than the sum of its proper divisors (11042566).

21314234 is a wasteful number, since it uses less digits than its factorization.

21314234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128484.

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

The square root of 21314234 is about 4616.7341270643. The cubic root of 21314234 is about 277.2617179149.

Adding to 21314234 its reverse (43241312), we get a palindrome (64555546).

The spelling of 21314234 in words is "twenty-one million, three hundred fourteen thousand, two hundred thirty-four".