1232112311321 has 4 divisors (see below), whose sum is σ = 1241517748944. Its totient is φ = 1222706873700.

The previous prime is 1232112311317. The next prime is 1232112311363. The reversal of 1232112311321 is 1231132112321.

It is a happy number.

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 1232112311321 - 2² = 1232112311317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1232112313321) 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, 4702718615 + ... + 4702718876.

It is an arithmetic number, because the mean of its divisors is an integer number (310379437236).

Almost surely, 2^{1232112311321} is an apocalyptic number.

It is an amenable number.

1232112311321 is a deficient number, since it is larger than the sum of its proper divisors (9405437623).

1232112311321 is an equidigital number, since it uses as much as digits as its factorization.

1232112311321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9405437622.

The product of its digits is 432, while the sum is 23.

Adding to 1232112311321 its reverse (1231132112321), we get a palindrome (2463244423642).

The spelling of 1232112311321 in words is "one trillion, two hundred thirty-two billion, one hundred twelve million, three hundred eleven thousand, three hundred twenty-one".