1312113001321 has 4 divisors (see below), whose sum is σ = 1312319347200. Its totient is φ = 1311906655444.

The previous prime is 1312113001301. The next prime is 1312113001337. The reversal of 1312113001321 is 1231003112131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1312113001321 - 2¹⁵ = 1312112968553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312113001301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103163401 + ... + 103176118.

It is an arithmetic number, because the mean of its divisors is an integer number (328079836800).

Almost surely, 2^{1312113001321} is an apocalyptic number.

It is an amenable number.

1312113001321 is a deficient number, since it is larger than the sum of its proper divisors (206345879).

1312113001321 is an equidigital number, since it uses as much as digits as its factorization.

1312113001321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206345878.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1312113001321 its reverse (1231003112131), we get a palindrome (2543116113452).

The spelling of 1312113001321 in words is "one trillion, three hundred twelve billion, one hundred thirteen million, one thousand, three hundred twenty-one".