20430442233 has 6 divisors (see below), whose sum is σ = 29510638794. Its totient is φ = 13620294816.

The previous prime is 20430442199. The next prime is 20430442237. The reversal of 20430442233 is 33224403402.

20430442233 is a `hidden beast` number, since 2 + 0 + 430 + 4 + 4 + 223 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20388412944 + 42029289 = 142788^2 + 6483^2 .

It is not a de Polignac number, because 20430442233 - 2¹⁰ = 20430441209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20430442197 and 20430442206.

It is not an unprimeable number, because it can be changed into a prime (20430442237) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1135024560 + ... + 1135024577.

It is an arithmetic number, because the mean of its divisors is an integer number (4918439799).

Almost surely, 2^20430442233 is an apocalyptic number.

It is an amenable number.

20430442233 is a deficient number, since it is larger than the sum of its proper divisors (9080196561).

20430442233 is a wasteful number, since it uses less digits than its factorization.

20430442233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2270049143 (or 2270049140 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

Adding to 20430442233 its reverse (33224403402), we get a palindrome (53654845635).

The spelling of 20430442233 in words is "twenty billion, four hundred thirty million, four hundred forty-two thousand, two hundred thirty-three".