32311231321 has 2 divisors, whose sum is σ = 32311231322. Its totient is φ = 32311231320.

The previous prime is 32311231313. The next prime is 32311231343. The reversal of 32311231321 is 12313211323.

It is an a-pointer prime, because the next prime (32311231343) can be obtained adding 32311231321 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20340464400 + 11970766921 = 142620^2 + 109411^2 .

It is a cyclic number.

It is not a de Polignac number, because 32311231321 - 2³ = 32311231313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 32311231292 and 32311231301.

It is not a weakly prime, because it can be changed into another prime (32311231361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16155615660 + 16155615661.

It is an arithmetic number, because the mean of its divisors is an integer number (16155615661).

Almost surely, 2^32311231321 is an apocalyptic number.

It is an amenable number.

32311231321 is a deficient number, since it is larger than the sum of its proper divisors (1).

32311231321 is an equidigital number, since it uses as much as digits as its factorization.

32311231321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 22.

Adding to 32311231321 its reverse (12313211323), we get a palindrome (44624442644).

The spelling of 32311231321 in words is "thirty-two billion, three hundred eleven million, two hundred thirty-one thousand, three hundred twenty-one".