20312012333 has 32 divisors (see below), whose sum is σ = 21850456320. Its totient is φ = 18840729600.

The previous prime is 20312012317. The next prime is 20312012381. The reversal of 20312012333 is 33321021302.

It is a cyclic number.

It is not a de Polignac number, because 20312012333 - 2⁴ = 20312012317 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312012393) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24560666 + ... + 24561492.

It is an arithmetic number, because the mean of its divisors is an integer number (682826760).

Almost surely, 2^20312012333 is an apocalyptic number.

20312012333 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20312012333 is a deficient number, since it is larger than the sum of its proper divisors (1538443987).

20312012333 is a wasteful number, since it uses less digits than its factorization.

20312012333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20312012333 its reverse (33321021302), we get a palindrome (53633033635).

The spelling of 20312012333 in words is "twenty billion, three hundred twelve million, twelve thousand, three hundred thirty-three".