1321303313013 has 32 divisors (see below), whose sum is σ = 1869700838400. Its totient is φ = 828197415936.

The previous prime is 1321303312999. The next prime is 1321303313039. The reversal of 1321303313013 is 3103133031231.

It is not a de Polignac number, because 1321303313013 - 2⁴ = 1321303312997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321303313413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72165606 + ... + 72183912.

It is an arithmetic number, because the mean of its divisors is an integer number (58428151200).

Almost surely, 2^{1321303313013} is an apocalyptic number.

It is an amenable number.

1321303313013 is a deficient number, since it is larger than the sum of its proper divisors (548397525387).

1321303313013 is a wasteful number, since it uses less digits than its factorization.

1321303313013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36121.

The product of its (nonzero) digits is 1458, while the sum is 24.

Adding to 1321303313013 its reverse (3103133031231), we get a palindrome (4424436344244).

The spelling of 1321303313013 in words is "one trillion, three hundred twenty-one billion, three hundred three million, three hundred thirteen thousand, thirteen".