20023320234 has 16 divisors (see below), whose sum is σ = 40595225472. Its totient is φ = 6583009248.

The previous prime is 20023320227. The next prime is 20023320257. The reversal of 20023320234 is 43202332002.

It is a self number, because there is not a number n which added to its sum of digits gives 20023320234.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22857234 + ... + 22858109.

It is an arithmetic number, because the mean of its divisors is an integer number (2537201592).

Almost surely, 2^20023320234 is an apocalyptic number.

20023320234 is an abundant number, since it is smaller than the sum of its proper divisors (20571905238).

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

20023320234 is a wasteful number, since it uses less digits than its factorization.

20023320234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45715421.

The product of its (nonzero) digits is 1728, while the sum is 21.

Adding to 20023320234 its reverse (43202332002), we get a palindrome (63225652236).

The spelling of 20023320234 in words is "twenty billion, twenty-three million, three hundred twenty thousand, two hundred thirty-four".