2231530220533 has 4 divisors (see below), whose sum is σ = 2231537667840. Its totient is φ = 2231522773228.

The previous prime is 2231530220489. The next prime is 2231530220539. The reversal of 2231530220533 is 3350220351322.

It is a happy number.

2231530220533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2231530220533 - 2⁹ = 2231530220021 is a prime.

It is a super-3 number, since 3×2231530220533³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2231530220495 and 2231530220504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231530220539) 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, 3254485 + ... + 3880042.

It is an arithmetic number, because the mean of its divisors is an integer number (557884416960).

Almost surely, 2^{2231530220533} is an apocalyptic number.

It is an amenable number.

2231530220533 is a deficient number, since it is larger than the sum of its proper divisors (7447307).

2231530220533 is an equidigital number, since it uses as much as digits as its factorization.

2231530220533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7447306.

The product of its (nonzero) digits is 32400, while the sum is 31.

Adding to 2231530220533 its reverse (3350220351322), we get a palindrome (5581750571855).

The spelling of 2231530220533 in words is "two trillion, two hundred thirty-one billion, five hundred thirty million, two hundred twenty thousand, five hundred thirty-three".