1312323331322 has 4 divisors (see below), whose sum is σ = 1968484996986. Its totient is φ = 656161665660.

The previous prime is 1312323331313. The next prime is 1312323331357. The reversal of 1312323331322 is 2231333232131.

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

It can be written as a sum of positive squares in only one way, i.e., 1061062746241 + 251260585081 = 1030079^2 + 501259^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328080832829 + ... + 328080832832.

Almost surely, 2^{1312323331322} is an apocalyptic number.

1312323331322 is a deficient number, since it is larger than the sum of its proper divisors (656161665664).

1312323331322 is an equidigital number, since it uses as much as digits as its factorization.

1312323331322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656161665663.

The product of its digits is 11664, while the sum is 29.

Adding to 1312323331322 its reverse (2231333232131), we get a palindrome (3543656563453).

The spelling of 1312323331322 in words is "one trillion, three hundred twelve billion, three hundred twenty-three million, three hundred thirty-one thousand, three hundred twenty-two".