21314432334 has 16 divisors (see below), whose sum is σ = 45908008272. Its totient is φ = 6558286848.

The previous prime is 21314432317. The next prime is 21314432393. The reversal of 21314432334 is 43323441312.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136630899 + ... + 136631054.

It is an arithmetic number, because the mean of its divisors is an integer number (2869250517).

Almost surely, 2^21314432334 is an apocalyptic number.

21314432334 is an abundant number, since it is smaller than the sum of its proper divisors (24593575938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21314432334 is a wasteful number, since it uses less digits than its factorization.

21314432334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273261971.

The product of its digits is 20736, while the sum is 30.

Adding to 21314432334 its reverse (43323441312), we get a palindrome (64637873646).

The spelling of 21314432334 in words is "twenty-one billion, three hundred fourteen million, four hundred thirty-two thousand, three hundred thirty-four".