20331132230231 has 8 divisors (see below), whose sum is σ = 20340613039824. Its totient is φ = 20321651877120.

The previous prime is 20331132230203. The next prime is 20331132230251. The reversal of 20331132230231 is 13203223113302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20331132230231 - 2²² = 20331128035927 is a prime.

It is a super-2 number, since 2×20331132230231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20331132230231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331132230251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116348081 + ... + 116522693.

It is an arithmetic number, because the mean of its divisors is an integer number (2542576629978).

Almost surely, 2^{20331132230231} is an apocalyptic number.

20331132230231 is a deficient number, since it is larger than the sum of its proper divisors (9480809593).

20331132230231 is a wasteful number, since it uses less digits than its factorization.

20331132230231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228241.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 20331132230231 its reverse (13203223113302), we get a palindrome (33534355343533).

The spelling of 20331132230231 in words is "twenty trillion, three hundred thirty-one billion, one hundred thirty-two million, two hundred thirty thousand, two hundred thirty-one".