20321111034 has 40 divisors (see below), whose sum is σ = 52039250208. Its totient is φ = 5806031400.

The previous prime is 20321111003. The next prime is 20321111053. The reversal of 20321111034 is 43011112302.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20321110998 and 20321111016.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8958792 + ... + 8961059.

Almost surely, 2^20321111034 is an apocalyptic number.

20321111034 is an abundant number, since it is smaller than the sum of its proper divisors (31718139174).

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

20321111034 is a wasteful number, since it uses less digits than its factorization.

20321111034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17919872 (or 17919863 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20321111034 its reverse (43011112302), we get a palindrome (63332223336).

The spelling of 20321111034 in words is "twenty billion, three hundred twenty-one million, one hundred eleven thousand, thirty-four".