21434310334 has 8 divisors (see below), whose sum is σ = 32176373688. Its totient is φ = 10708852440.

The previous prime is 21434310307. The next prime is 21434310389. The reversal of 21434310334 is 43301343412.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4148137 + ... + 4153300.

It is an arithmetic number, because the mean of its divisors is an integer number (4022046711).

Almost surely, 2^21434310334 is an apocalyptic number.

21434310334 is a deficient number, since it is larger than the sum of its proper divisors (10742063354).

21434310334 is a wasteful number, since it uses less digits than its factorization.

21434310334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8302730.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 21434310334 its reverse (43301343412), we get a palindrome (64735653746).

The spelling of 21434310334 in words is "twenty-one billion, four hundred thirty-four million, three hundred ten thousand, three hundred thirty-four".