21314235 has 8 divisors (see below), whose sum is σ = 34102800. Its totient is φ = 11367584.

The previous prime is 21314233. The next prime is 21314269. The reversal of 21314235 is 53241312.

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

It is a cyclic number.

It is not a de Polignac number, because 21314235 - 2¹ = 21314233 is a prime.

It is a super-2 number, since 2×21314235² = 908593227270450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21314231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 710460 + ... + 710489.

It is an arithmetic number, because the mean of its divisors is an integer number (4262850).

Almost surely, 2^21314235 is an apocalyptic number.

21314235 is a deficient number, since it is larger than the sum of its proper divisors (12788565).

21314235 is a wasteful number, since it uses less digits than its factorization.

21314235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420957.

The product of its digits is 720, while the sum is 21.

The square root of 21314235 is about 4616.7342353659. The cubic root of 21314235 is about 277.2617222510.

Adding to 21314235 its reverse (53241312), we get a palindrome (74555547).

The spelling of 21314235 in words is "twenty-one million, three hundred fourteen thousand, two hundred thirty-five".