21432314113 has 16 divisors (see below), whose sum is σ = 24693318144. Its totient is φ = 18221345280.

The previous prime is 21432314083. The next prime is 21432314117. The reversal of 21432314113 is 31141323412.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21432314113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21432314117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1235208 + ... + 1252438.

It is an arithmetic number, because the mean of its divisors is an integer number (1543332384).

Almost surely, 2^21432314113 is an apocalyptic number.

It is an amenable number.

21432314113 is a deficient number, since it is larger than the sum of its proper divisors (3261004031).

21432314113 is a wasteful number, since it uses less digits than its factorization.

21432314113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18672.

The product of its digits is 1728, while the sum is 25.

Adding to 21432314113 its reverse (31141323412), we get a palindrome (52573637525).

The spelling of 21432314113 in words is "twenty-one billion, four hundred thirty-two million, three hundred fourteen thousand, one hundred thirteen".