20033431312 has 40 divisors (see below), whose sum is σ = 41109335352. Its totient is φ = 9424896000.

The previous prime is 20033431309. The next prime is 20033431403. The reversal of 20033431312 is 21313433002.

It can be written as a sum of positive squares in 4 ways, for example, as 10969629696 + 9063801616 = 104736^2 + 95204^2 .

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, 1276312 + ... + 1291912.

Almost surely, 2^20033431312 is an apocalyptic number.

It is an amenable number.

20033431312 is an abundant number, since it is smaller than the sum of its proper divisors (21075904040).

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

20033431312 is a wasteful number, since it uses less digits than its factorization.

20033431312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20347 (or 20341 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 20033431312 its reverse (21313433002), we get a palindrome (41346864314).

The spelling of 20033431312 in words is "twenty billion, thirty-three million, four hundred thirty-one thousand, three hundred twelve".