1312231301321 has 8 divisors (see below), whose sum is σ = 1344996321984. Its totient is φ = 1279762797040.

The previous prime is 1312231301317. The next prime is 1312231301341. The reversal of 1312231301321 is 1231031322131.

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 1312231301321 - 2² = 1312231301317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312231301341) 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, 74120135 + ... + 74137836.

It is an arithmetic number, because the mean of its divisors is an integer number (168124540248).

Almost surely, 2^{1312231301321} is an apocalyptic number.

It is an amenable number.

1312231301321 is a deficient number, since it is larger than the sum of its proper divisors (32765020663).

1312231301321 is a wasteful number, since it uses less digits than its factorization.

1312231301321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148258191.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1312231301321 its reverse (1231031322131), we get a palindrome (2543262623452).

The spelling of 1312231301321 in words is "one trillion, three hundred twelve billion, two hundred thirty-one million, three hundred one thousand, three hundred twenty-one".