1312323001321 has 8 divisors (see below), whose sum is σ = 1345077390888. Its totient is φ = 1279604160000.

The previous prime is 1312323001313. The next prime is 1312323001357. The reversal of 1312323001321 is 1231003232131.

It can be written as a sum of positive squares in 4 ways, for example, as 7555955625 + 1304767045696 = 86925^2 + 1142264^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1312323001321 - 2³ = 1312323001313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1312323001292 and 1312323001301.

It is not an unprimeable number, because it can be changed into a prime (1312323001721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8812300 + ... + 8959981.

It is an arithmetic number, because the mean of its divisors is an integer number (168134673861).

Almost surely, 2^{1312323001321} is an apocalyptic number.

It is an amenable number.

1312323001321 is a deficient number, since it is larger than the sum of its proper divisors (32754389567).

1312323001321 is a wasteful number, since it uses less digits than its factorization.

1312323001321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17774123.

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

Adding to 1312323001321 its reverse (1231003232131), we get a palindrome (2543326233452).

The spelling of 1312323001321 in words is "one trillion, three hundred twelve billion, three hundred twenty-three million, one thousand, three hundred twenty-one".