2231331220133 has 4 divisors (see below), whose sum is σ = 2231359791648. Its totient is φ = 2231302648620.

The previous prime is 2231331220123. The next prime is 2231331220159. The reversal of 2231331220133 is 3310221331322.

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 2231331220133 - 2⁴ = 2231331220117 is a prime.

It is a super-3 number, since 3×2231331220133³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231331220123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14168291 + ... + 14324912.

It is an arithmetic number, because the mean of its divisors is an integer number (557839947912).

Almost surely, 2^{2231331220133} is an apocalyptic number.

It is an amenable number.

2231331220133 is a deficient number, since it is larger than the sum of its proper divisors (28571515).

2231331220133 is an equidigital number, since it uses as much as digits as its factorization.

2231331220133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28571514.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 2231331220133 its reverse (3310221331322), we get a palindrome (5541552551455).

The spelling of 2231331220133 in words is "two trillion, two hundred thirty-one billion, three hundred thirty-one million, two hundred twenty thousand, one hundred thirty-three".