20201232330 has 80 divisors (see below), whose sum is σ = 55063124424. Its totient is φ = 5313185280.

The previous prime is 20201232299. The next prime is 20201232353. The reversal of 20201232330 is 3323210202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19593560529 + 607671801 = 139977^2 + 24651^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 111691 + ... + 229950.

Almost surely, 2^20201232330 is an apocalyptic number.

20201232330 is an abundant number, since it is smaller than the sum of its proper divisors (34861892094).

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

20201232330 is a wasteful number, since it uses less digits than its factorization.

20201232330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341733 (or 341724 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 20201232330 its reverse (3323210202), we get a palindrome (23524442532).

The spelling of 20201232330 in words is "twenty billion, two hundred one million, two hundred thirty-two thousand, three hundred thirty".