1312320031001 has 6 divisors (see below), whose sum is σ = 1526576362650. Its totient is φ = 1124845740816.

The previous prime is 1312320030979. The next prime is 1312320031007. The reversal of 1312320031001 is 1001300232131.

It can be written as a sum of positive squares in only one way, i.e., 1089017473600 + 223302557401 = 1043560^2 + 472549^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1312320031001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312320031007) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13391020676 + ... + 13391020773.

It is an arithmetic number, because the mean of its divisors is an integer number (254429393775).

Almost surely, 2^{1312320031001} is an apocalyptic number.

It is an amenable number.

1312320031001 is a deficient number, since it is larger than the sum of its proper divisors (214256331649).

1312320031001 is an equidigital number, since it uses as much as digits as its factorization.

1312320031001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26782041463 (or 26782041456 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1312320031001 its reverse (1001300232131), we get a palindrome (2313620263132).

The spelling of 1312320031001 in words is "one trillion, three hundred twelve billion, three hundred twenty million, thirty-one thousand, one".