21303114 has 16 divisors (see below), whose sum is σ = 48692928. Its totient is φ = 6086592.

The previous prime is 21303109. The next prime is 21303127. The reversal of 21303114 is 41130312.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21303093 and 21303102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253567 + ... + 253650.

It is an arithmetic number, because the mean of its divisors is an integer number (3043308).

Almost surely, 2^21303114 is an apocalyptic number.

21303114 is an abundant number, since it is smaller than the sum of its proper divisors (27389814).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21303114 is a wasteful number, since it uses less digits than its factorization.

21303114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507229.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 21303114 is about 4615.5296554133. The cubic root of 21303114 is about 277.2134921356.

Adding to 21303114 its reverse (41130312), we get a palindrome (62433426).

The spelling of 21303114 in words is "twenty-one million, three hundred three thousand, one hundred fourteen".