20031211333 has 8 divisors (see below), whose sum is σ = 24239449152. Its totient is φ = 16159632576.

The previous prime is 20031211307. The next prime is 20031211349. The reversal of 20031211333 is 33311213002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20031211333 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20031211333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20031211303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84164635 + ... + 84164872.

It is an arithmetic number, because the mean of its divisors is an integer number (3029931144).

Almost surely, 2^20031211333 is an apocalyptic number.

It is an amenable number.

20031211333 is a deficient number, since it is larger than the sum of its proper divisors (4208237819).

20031211333 is a wasteful number, since it uses less digits than its factorization.

20031211333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168329531.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 20031211333 its reverse (33311213002), we get a palindrome (53342424335).

The spelling of 20031211333 in words is "twenty billion, thirty-one million, two hundred eleven thousand, three hundred thirty-three".