1310001231321 has 32 divisors (see below), whose sum is σ = 1964211258240. Its totient is φ = 862810776000.

The previous prime is 1310001231289. The next prime is 1310001231373. The reversal of 1310001231321 is 1231321000131.

1310001231321 is a `hidden beast` number, since 1 + 310 + 0 + 0 + 1 + 2 + 31 + 321 = 666.

It is not a de Polignac number, because 1310001231321 - 2⁵ = 1310001231289 is a prime.

It is a super-2 number, since 2×1310001231321² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1310001231294 and 1310001231303.

It is not an unprimeable number, because it can be changed into a prime (1310001231821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 736126 + ... + 1778168.

It is an arithmetic number, because the mean of its divisors is an integer number (61381601820).

Almost surely, 2^{1310001231321} is an apocalyptic number.

It is an amenable number.

1310001231321 is a deficient number, since it is larger than the sum of its proper divisors (654210026919).

1310001231321 is a wasteful number, since it uses less digits than its factorization.

1310001231321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042614 (or 1042608 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1310001231321 its reverse (1231321000131), we get a palindrome (2541322231452).

The spelling of 1310001231321 in words is "one trillion, three hundred ten billion, one million, two hundred thirty-one thousand, three hundred twenty-one".