1232311232321 has 4 divisors (see below), whose sum is σ = 1327104404052. Its totient is φ = 1137518060592.

The previous prime is 1232311232261. The next prime is 1232311232333. The reversal of 1232311232321 is 1232321132321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 731818655296 + 500492577025 = 855464^2 + 707455^2 .

It is a cyclic number.

It is not a de Polignac number, because 1232311232321 - 2²⁶ = 1232244123457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1232311222321) 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, 47396585846 + ... + 47396585871.

It is an arithmetic number, because the mean of its divisors is an integer number (331776101013).

Almost surely, 2^{1232311232321} is an apocalyptic number.

It is an amenable number.

1232311232321 is a deficient number, since it is larger than the sum of its proper divisors (94793171731).

1232311232321 is an equidigital number, since it uses as much as digits as its factorization.

1232311232321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94793171730.

The product of its digits is 2592, while the sum is 26.

Adding to 1232311232321 its reverse (1232321132321), we get a palindrome (2464632364642).

The spelling of 1232311232321 in words is "one trillion, two hundred thirty-two billion, three hundred eleven million, two hundred thirty-two thousand, three hundred twenty-one".