21232314 has 16 divisors (see below), whose sum is σ = 47183040. Its totient is φ = 7077420.

The previous prime is 21232307. The next prime is 21232363. The reversal of 21232314 is 41323212.

It is a super-2 number, since 2×21232314² = 901622315589192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196542 + ... + 196649.

It is an arithmetic number, because the mean of its divisors is an integer number (2948940).

Almost surely, 2^21232314 is an apocalyptic number.

21232314 is an abundant number, since it is smaller than the sum of its proper divisors (25950726).

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

21232314 is a wasteful number, since it uses less digits than its factorization.

21232314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393202 (or 393196 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 21232314 is about 4607.8535132966. The cubic root of 21232314 is about 276.9060488461.

Adding to 21232314 its reverse (41323212), we get a palindrome (62555526).

The spelling of 21232314 in words is "twenty-one million, two hundred thirty-two thousand, three hundred fourteen".