21314205413 has 4 divisors (see below), whose sum is σ = 22567982220. Its totient is φ = 20060428608.

The previous prime is 21314205389. The next prime is 21314205433. The reversal of 21314205413 is 31450241312.

It is a happy number.

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 8182649764 + 13131555649 = 90458^2 + 114593^2 .

It is a cyclic number.

It is not a de Polignac number, because 21314205413 - 2³⁰ = 20240463589 is a prime.

It is a super-3 number, since 3×21314205413³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21314205433) 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, 626888378 + ... + 626888411.

It is an arithmetic number, because the mean of its divisors is an integer number (5641995555).

Almost surely, 2^21314205413 is an apocalyptic number.

It is an amenable number.

21314205413 is a deficient number, since it is larger than the sum of its proper divisors (1253776807).

21314205413 is a wasteful number, since it uses less digits than its factorization.

21314205413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253776806.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 21314205413 its reverse (31450241312), we get a palindrome (52764446725).

The spelling of 21314205413 in words is "twenty-one billion, three hundred fourteen million, two hundred five thousand, four hundred thirteen".