20344321430 has 32 divisors (see below), whose sum is σ = 39034159200. Its totient is φ = 7607626240.

The previous prime is 20344321427. The next prime is 20344321457. The reversal of 20344321430 is 3412344302.

It is a self number, because there is not a number n which added to its sum of digits gives 20344321430.

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, 376256 + ... + 426915.

It is an arithmetic number, because the mean of its divisors is an integer number (1219817475).

Almost surely, 2^20344321430 is an apocalyptic number.

20344321430 is a deficient number, since it is larger than the sum of its proper divisors (18689837770).

20344321430 is a wasteful number, since it uses less digits than its factorization.

20344321430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803344.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 20344321430 its reverse (3412344302), we get a palindrome (23756665732).

The spelling of 20344321430 in words is "twenty billion, three hundred forty-four million, three hundred twenty-one thousand, four hundred thirty".