1312021303113 has 4 divisors (see below), whose sum is σ = 1749361737488. Its totient is φ = 874680868740.

The previous prime is 1312021303091. The next prime is 1312021303123. The reversal of 1312021303113 is 3113031202131.

It is a happy number.

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 not a de Polignac number, because 1312021303113 - 2⁵ = 1312021303081 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 1312021303113.

It is not an unprimeable number, because it can be changed into a prime (1312021303123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218670217183 + ... + 218670217188.

It is an arithmetic number, because the mean of its divisors is an integer number (437340434372).

Almost surely, 2^{1312021303113} is an apocalyptic number.

It is an amenable number.

1312021303113 is a deficient number, since it is larger than the sum of its proper divisors (437340434375).

1312021303113 is an equidigital number, since it uses as much as digits as its factorization.

1312021303113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437340434374.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1312021303113 its reverse (3113031202131), we get a palindrome (4425052505244).

The spelling of 1312021303113 in words is "one trillion, three hundred twelve billion, twenty-one million, three hundred three thousand, one hundred thirteen".