1233321313231 has 12 divisors (see below), whose sum is σ = 1519072831008. Its totient is φ = 994948285632.

The previous prime is 1233321313223. The next prime is 1233321313243. The reversal of 1233321313231 is 1323131233321.

It is a happy number.

It is not a de Polignac number, because 1233321313231 - 2³ = 1233321313223 is a prime.

It is a super-2 number, since 2×1233321313231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1233321313231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233321310231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 740288071 + ... + 740289736.

It is an arithmetic number, because the mean of its divisors is an integer number (126589402584).

Almost surely, 2^{1233321313231} is an apocalyptic number.

1233321313231 is a deficient number, since it is larger than the sum of its proper divisors (285751517777).

1233321313231 is a wasteful number, since it uses less digits than its factorization.

1233321313231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1480577838 (or 1480577831 counting only the distinct ones).

The product of its digits is 5832, while the sum is 28.

Adding to 1233321313231 its reverse (1323131233321), we get a palindrome (2556452546552).

The spelling of 1233321313231 in words is "one trillion, two hundred thirty-three billion, three hundred twenty-one million, three hundred thirteen thousand, two hundred thirty-one".