20332012231 has 4 divisors (see below), whose sum is σ = 20529410512. Its totient is φ = 20134613952.

The previous prime is 20332012219. The next prime is 20332012237. The reversal of 20332012231 is 13221023302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20332012231 - 2²¹ = 20329915079 is a prime.

It is a super-2 number, since 2×20332012231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20332012199 and 20332012208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20332012237) 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, 98698986 + ... + 98699191.

It is an arithmetic number, because the mean of its divisors is an integer number (5132352628).

Almost surely, 2^20332012231 is an apocalyptic number.

20332012231 is a deficient number, since it is larger than the sum of its proper divisors (197398281).

20332012231 is a wasteful number, since it uses less digits than its factorization.

20332012231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197398280.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20332012231 its reverse (13221023302), we get a palindrome (33553035533).

The spelling of 20332012231 in words is "twenty billion, three hundred thirty-two million, twelve thousand, two hundred thirty-one".