20033102231 has 4 divisors (see below), whose sum is σ = 20107575000. Its totient is φ = 19958629464.

The previous prime is 20033102153. The next prime is 20033102237. The reversal of 20033102231 is 13220133002.

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-20033102231 is a prime.

It is a super-2 number, since 2×20033102231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20033102237) 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, 37235981 + ... + 37236518.

It is an arithmetic number, because the mean of its divisors is an integer number (5026893750).

Almost surely, 2^20033102231 is an apocalyptic number.

20033102231 is a deficient number, since it is larger than the sum of its proper divisors (74472769).

20033102231 is an equidigital number, since it uses as much as digits as its factorization.

20033102231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74472768.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20033102231 its reverse (13220133002), we get a palindrome (33253235233).

The spelling of 20033102231 in words is "twenty billion, thirty-three million, one hundred two thousand, two hundred thirty-one".