21434113 has 8 divisors (see below), whose sum is σ = 22181120. Its totient is φ = 20690640.

The previous prime is 21434107. The next prime is 21434117. The reversal of 21434113 is 31143412.

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

It is not a de Polignac number, because 21434113 - 2¹⁷ = 21303041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21434117) 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, 18631 + ... + 19747.

It is an arithmetic number, because the mean of its divisors is an integer number (2772640).

Almost surely, 2^21434113 is an apocalyptic number.

It is an amenable number.

21434113 is a deficient number, since it is larger than the sum of its proper divisors (747007).

21434113 is a wasteful number, since it uses less digits than its factorization.

21434113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1767.

The product of its digits is 288, while the sum is 19.

The square root of 21434113 is about 4629.6990182948. The cubic root of 21434113 is about 277.7805533175.

Adding to 21434113 its reverse (31143412), we get a palindrome (52577525).

The spelling of 21434113 in words is "twenty-one million, four hundred thirty-four thousand, one hundred thirteen".