1313343110021 has 8 divisors (see below), whose sum is σ = 1391768141400. Its totient is φ = 1237127234560.

The previous prime is 1313343109999. The next prime is 1313343110041. The reversal of 1313343110021 is 1200113433131.

It can be written as a sum of positive squares in 4 ways, for example, as 99190353025 + 1214152756996 = 314945^2 + 1101886^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1313343110021 - 2¹⁰ = 1313343108997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313343110041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 552287756 + ... + 552290133.

It is an arithmetic number, because the mean of its divisors is an integer number (173971017675).

Almost surely, 2^{1313343110021} is an apocalyptic number.

It is an amenable number.

1313343110021 is a deficient number, since it is larger than the sum of its proper divisors (78425031379).

1313343110021 is a wasteful number, since it uses less digits than its factorization.

1313343110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104577959.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1313343110021 its reverse (1200113433131), we get a palindrome (2513456543152).

The spelling of 1313343110021 in words is "one trillion, three hundred thirteen billion, three hundred forty-three million, one hundred ten thousand, twenty-one".