1312144204321 has 8 divisors (see below), whose sum is σ = 1313931608064. Its totient is φ = 1310357869440.

The previous prime is 1312144204303. The next prime is 1312144204351. The reversal of 1312144204321 is 1234024412131.

It is a happy number.

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 1312144204321 - 2⁵ = 1312144204289 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312144204321.

It is not an unprimeable number, because it can be changed into a prime (1312144204351) 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, 2205216 + ... + 2736286.

It is an arithmetic number, because the mean of its divisors is an integer number (164241451008).

Almost surely, 2^{1312144204321} is an apocalyptic number.

It is an amenable number.

1312144204321 is a deficient number, since it is larger than the sum of its proper divisors (1787403743).

1312144204321 is a wasteful number, since it uses less digits than its factorization.

1312144204321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534431.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 1312144204321 its reverse (1234024412131), we get a palindrome (2546168616452).

The spelling of 1312144204321 in words is "one trillion, three hundred twelve billion, one hundred forty-four million, two hundred four thousand, three hundred twenty-one".