20033323001231 has 4 divisors (see below), whose sum is σ = 20039808379200. Its totient is φ = 20026837623264.

The previous prime is 20033323001207. The next prime is 20033323001239. The reversal of 20033323001231 is 13210032333002.

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-20033323001231 is a prime.

It is a super-2 number, since 2×20033323001231² (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 = 20033323001197 and 20033323001206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20033323001239) 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, 3242684351 + ... + 3242690528.

It is an arithmetic number, because the mean of its divisors is an integer number (5009952094800).

Almost surely, 2^{20033323001231} is an apocalyptic number.

20033323001231 is a deficient number, since it is larger than the sum of its proper divisors (6485377969).

20033323001231 is an equidigital number, since it uses as much as digits as its factorization.

20033323001231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6485377968.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 20033323001231 its reverse (13210032333002), we get a palindrome (33243355334233).

The spelling of 20033323001231 in words is "twenty trillion, thirty-three billion, three hundred twenty-three million, one thousand, two hundred thirty-one".