1313300131021 has 4 divisors (see below), whose sum is σ = 1313302610844. Its totient is φ = 1313297651200.

The previous prime is 1313300130979. The next prime is 1313300131063. The reversal of 1313300131021 is 1201310033131.

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

It is an interprime number because it is at equal distance from previous prime (1313300130979) and next prime (1313300131063).

It can be written as a sum of positive squares in 2 ways, for example, as 88428916900 + 1224871214121 = 297370^2 + 1106739^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313300131021 - 2¹³ = 1313300122829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1313300131021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313300131921) 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, 90100 + ... + 1623181.

It is an arithmetic number, because the mean of its divisors is an integer number (328325652711).

Almost surely, 2^{1313300131021} is an apocalyptic number.

It is an amenable number.

1313300131021 is a deficient number, since it is larger than the sum of its proper divisors (2479823).

1313300131021 is an equidigital number, since it uses as much as digits as its factorization.

1313300131021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2479822.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 1313300131021 its reverse (1201310033131), we get a palindrome (2514610164152).

The spelling of 1313300131021 in words is "one trillion, three hundred thirteen billion, three hundred million, one hundred thirty-one thousand, twenty-one".