20032231020 has 24 divisors (see below), whose sum is σ = 56090247024. Its totient is φ = 5341928256.

The previous prime is 20032231003. The next prime is 20032231057. The reversal of 20032231020 is 2013223002.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 166935199 + ... + 166935318.

It is an arithmetic number, because the mean of its divisors is an integer number (2337093626).

Almost surely, 2^20032231020 is an apocalyptic number.

20032231020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20032231020 is an abundant number, since it is smaller than the sum of its proper divisors (36058016004).

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

20032231020 is a wasteful number, since it uses less digits than its factorization.

20032231020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333870529 (or 333870527 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20032231020 its reverse (2013223002), we get a palindrome (22045454022).

The spelling of 20032231020 in words is "twenty billion, thirty-two million, two hundred thirty-one thousand, twenty".