20012311233 has 12 divisors (see below), whose sum is σ = 29079767808. Its totient is φ = 13261650360.

The previous prime is 20012311229. The next prime is 20012311259. The reversal of 20012311233 is 33211321002.

20012311233 is a `hidden beast` number, since 200 + 1 + 231 + 1 + 233 = 666.

It is not a de Polignac number, because 20012311233 - 2² = 20012311229 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20012311283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6655953 + ... + 6658958.

It is an arithmetic number, because the mean of its divisors is an integer number (2423313984).

Almost surely, 2^20012311233 is an apocalyptic number.

It is an amenable number.

20012311233 is a deficient number, since it is larger than the sum of its proper divisors (9067456575).

20012311233 is a wasteful number, since it uses less digits than its factorization.

20012311233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13315084 (or 13315081 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20012311233 its reverse (33211321002), we get a palindrome (53223632235).

The spelling of 20012311233 in words is "twenty billion, twelve million, three hundred eleven thousand, two hundred thirty-three".