1323212233231 has 16 divisors (see below), whose sum is σ = 1547491004928. Its totient is φ = 1107748303200.

The previous prime is 1323212233163. The next prime is 1323212233297. The reversal of 1323212233231 is 1323322123231.

It is a happy number.

It is not a de Polignac number, because 1323212233231 - 2⁷ = 1323212233103 is a prime.

It is a super-2 number, since 2×1323212233231² (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 1323212233231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323212236231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6320646 + ... + 6526636.

It is an arithmetic number, because the mean of its divisors is an integer number (96718187808).

Almost surely, 2^{1323212233231} is an apocalyptic number.

1323212233231 is a deficient number, since it is larger than the sum of its proper divisors (224278771697).

1323212233231 is a wasteful number, since it uses less digits than its factorization.

1323212233231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227382.

The product of its digits is 7776, while the sum is 28.

Adding to 1323212233231 its reverse (1323322123231), we get a palindrome (2646534356462).

The spelling of 1323212233231 in words is "one trillion, three hundred twenty-three billion, two hundred twelve million, two hundred thirty-three thousand, two hundred thirty-one".