21314113 has 4 divisors (see below), whose sum is σ = 21329028. Its totient is φ = 21299200.

The previous prime is 21314087. The next prime is 21314149. The reversal of 21314113 is 31141312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16548624 + 4765489 = 4068^2 + 2183^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21314113 is a prime.

It is a super-3 number, since 3×21314113³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21311113) 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, 5056 + ... + 8257.

It is an arithmetic number, because the mean of its divisors is an integer number (5332257).

Almost surely, 2^21314113 is an apocalyptic number.

It is an amenable number.

21314113 is a deficient number, since it is larger than the sum of its proper divisors (14915).

21314113 is a wasteful number, since it uses less digits than its factorization.

21314113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14914.

The product of its digits is 72, while the sum is 16.

The square root of 21314113 is about 4616.7210225440. The cubic root of 21314113 is about 277.2611932462.

Adding to 21314113 its reverse (31141312), we get a palindrome (52455425).

The spelling of 21314113 in words is "twenty-one million, three hundred fourteen thousand, one hundred thirteen".