20331210231 has 24 divisors (see below), whose sum is σ = 31179605184. Its totient is φ = 12722042880.

The previous prime is 20331210223. The next prime is 20331210241. The reversal of 20331210231 is 13201213302.

It is not a de Polignac number, because 20331210231 - 2³ = 20331210223 is a prime.

It is a super-2 number, since 2×20331210231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331210241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124890 + ... + 237191.

It is an arithmetic number, because the mean of its divisors is an integer number (1299150216).

Almost surely, 2^20331210231 is an apocalyptic number.

20331210231 is a deficient number, since it is larger than the sum of its proper divisors (10848394953).

20331210231 is a wasteful number, since it uses less digits than its factorization.

20331210231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362471 (or 362468 counting only the distinct ones).

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

Adding to 20331210231 its reverse (13201213302), we get a palindrome (33532423533).

The spelling of 20331210231 in words is "twenty billion, three hundred thirty-one million, two hundred ten thousand, two hundred thirty-one".