20332233311231 has 4 divisors (see below), whose sum is σ = 20332296935832. Its totient is φ = 20332169686632.

The previous prime is 20332233311219. The next prime is 20332233311293. The reversal of 20332233311231 is 13211333223302.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20332233311231 is a prime.

It is a super-2 number, since 2×20332233311231² (a number of 27 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 = 20332233311194 and 20332233311203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20332233371231) 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, 31330520 + ... + 31972893.

It is an arithmetic number, because the mean of its divisors is an integer number (5083074233958).

Almost surely, 2^{20332233311231} is an apocalyptic number.

20332233311231 is a deficient number, since it is larger than the sum of its proper divisors (63624601).

20332233311231 is an equidigital number, since it uses as much as digits as its factorization.

20332233311231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63624600.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 20332233311231 its reverse (13211333223302), we get a palindrome (33543566534533).

The spelling of 20332233311231 in words is "twenty trillion, three hundred thirty-two billion, two hundred thirty-three million, three hundred eleven thousand, two hundred thirty-one".