1313130131021 has 4 divisors (see below), whose sum is σ = 1382242243200. Its totient is φ = 1244018018844.

The previous prime is 1313130131009. The next prime is 1313130131149. The reversal of 1313130131021 is 1201310313131.

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 1313130131021 - 2⁶ = 1313130130957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1313130130984 and 1313130131002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313130131321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34556056061 + ... + 34556056098.

It is an arithmetic number, because the mean of its divisors is an integer number (345560560800).

Almost surely, 2^{1313130131021} is an apocalyptic number.

It is an amenable number.

1313130131021 is a deficient number, since it is larger than the sum of its proper divisors (69112112179).

1313130131021 is an equidigital number, since it uses as much as digits as its factorization.

1313130131021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69112112178.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 1313130131021 its reverse (1201310313131), we get a palindrome (2514440444152).

The spelling of 1313130131021 in words is "one trillion, three hundred thirteen billion, one hundred thirty million, one hundred thirty-one thousand, twenty-one".