21344423230 has 32 divisors (see below), whose sum is σ = 41777072064. Its totient is φ = 7804498176.

The previous prime is 21344423189. The next prime is 21344423263. The reversal of 21344423230 is 3232444312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 783639 + ... + 810418.

It is an arithmetic number, because the mean of its divisors is an integer number (1305533502).

Almost surely, 2^21344423230 is an apocalyptic number.

21344423230 is a deficient number, since it is larger than the sum of its proper divisors (20432648834).

21344423230 is a wasteful number, since it uses less digits than its factorization.

21344423230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1594180.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 21344423230 its reverse (3232444312), we get a palindrome (24576867542).

The spelling of 21344423230 in words is "twenty-one billion, three hundred forty-four million, four hundred twenty-three thousand, two hundred thirty".