20312332211 has 4 divisors (see below), whose sum is σ = 20359461024. Its totient is φ = 20265203400.

The previous prime is 20312332193. The next prime is 20312332219. The reversal of 20312332211 is 11223321302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11223321302 = 2 ⋅5611660651.

It is a cyclic number.

It is not a de Polignac number, because 20312332211 - 2¹⁴ = 20312315827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20312332219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23563760 + ... + 23564621.

It is an arithmetic number, because the mean of its divisors is an integer number (5089865256).

Almost surely, 2^20312332211 is an apocalyptic number.

20312332211 is a deficient number, since it is larger than the sum of its proper divisors (47128813).

20312332211 is an equidigital number, since it uses as much as digits as its factorization.

20312332211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47128812.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20312332211 its reverse (11223321302), we get a palindrome (31535653513).

The spelling of 20312332211 in words is "twenty billion, three hundred twelve million, three hundred thirty-two thousand, two hundred eleven".