20133331333231 has 4 divisors (see below), whose sum is σ = 20133343595872. Its totient is φ = 20133319070592.

The previous prime is 20133331333187. The next prime is 20133331333259. The reversal of 20133331333231 is 13233313333102.

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 20133331333231 - 2¹³ = 20133331325039 is a prime.

It is a super-2 number, since 2×20133331333231² (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 = 20133331333193 and 20133331333202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20133331333831) 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, 3202071 + ... + 7107736.

It is an arithmetic number, because the mean of its divisors is an integer number (5033335898968).

Almost surely, 2^{20133331333231} is an apocalyptic number.

20133331333231 is a deficient number, since it is larger than the sum of its proper divisors (12262641).

20133331333231 is a wasteful number, since it uses less digits than its factorization.

20133331333231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12262640.

The product of its (nonzero) digits is 26244, while the sum is 31.

Adding to 20133331333231 its reverse (13233313333102), we get a palindrome (33366644666333).

The spelling of 20133331333231 in words is "twenty trillion, one hundred thirty-three billion, three hundred thirty-one million, three hundred thirty-three thousand, two hundred thirty-one".