20312210133 has 16 divisors (see below), whose sum is σ = 31400519040. Its totient is φ = 12952713312.

The previous prime is 20312210123. The next prime is 20312210207. The reversal of 20312210133 is 33101221302.

It is not a de Polignac number, because 20312210133 - 2¹⁴ = 20312193749 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 (20312210123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16353816 + ... + 16355057.

It is an arithmetic number, because the mean of its divisors is an integer number (1962532440).

Almost surely, 2^20312210133 is an apocalyptic number.

20312210133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20312210133 is a deficient number, since it is larger than the sum of its proper divisors (11088308907).

20312210133 is a wasteful number, since it uses less digits than its factorization.

20312210133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32708905 (or 32708899 counting only the distinct ones).

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

Adding to 20312210133 its reverse (33101221302), we get a palindrome (53413431435).

The spelling of 20312210133 in words is "twenty billion, three hundred twelve million, two hundred ten thousand, one hundred thirty-three".