2231323221232 has 80 divisors (see below), whose sum is σ = 5085067034880. Its totient is φ = 928746809856.

The previous prime is 2231323221163. The next prime is 2231323221251. The reversal of 2231323221232 is 2321223231322.

It is a super-3 number, since 3×2231323221232³ (a number of 38 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 2231323221232.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1485693 + ... + 2582620.

It is an arithmetic number, because the mean of its divisors is an integer number (63563337936).

Almost surely, 2^{2231323221232} is an apocalyptic number.

It is an amenable number.

2231323221232 is an abundant number, since it is smaller than the sum of its proper divisors (2853743813648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2231323221232 is a wasteful number, since it uses less digits than its factorization.

2231323221232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4068470 (or 4068464 counting only the distinct ones).

The product of its digits is 10368, while the sum is 28.

Adding to 2231323221232 its reverse (2321223231322), we get a palindrome (4552546452554).

The spelling of 2231323221232 in words is "two trillion, two hundred thirty-one billion, three hundred twenty-three million, two hundred twenty-one thousand, two hundred thirty-two".