1313002221331 has 4 divisors (see below), whose sum is σ = 1316786089752. Its totient is φ = 1309218352912.

The previous prime is 1313002221329. The next prime is 1313002221389. The reversal of 1313002221331 is 1331222003131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1313002221331 - 2¹ = 1313002221329 is a prime.

It is a super-2 number, since 2×1313002221331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313002221031) 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, 1891933690 + ... + 1891934383.

It is an arithmetic number, because the mean of its divisors is an integer number (329196522438).

Almost surely, 2^{1313002221331} is an apocalyptic number.

1313002221331 is a deficient number, since it is larger than the sum of its proper divisors (3783868421).

1313002221331 is an equidigital number, since it uses as much as digits as its factorization.

1313002221331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3783868420.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1313002221331 its reverse (1331222003131), we get a palindrome (2644224224462).

The spelling of 1313002221331 in words is "one trillion, three hundred thirteen billion, two million, two hundred twenty-one thousand, three hundred thirty-one".