1310100020443 has 4 divisors (see below), whose sum is σ = 1310296355608. Its totient is φ = 1309903685280.

The previous prime is 1310100020429. The next prime is 1310100020459. The reversal of 1310100020443 is 3440200010131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1310100020443 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 1310100020443.

It is not an unprimeable number, because it can be changed into a prime (1310100020413) 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, 98157573 + ... + 98170918.

It is an arithmetic number, because the mean of its divisors is an integer number (327574088902).

Almost surely, 2^{1310100020443} is an apocalyptic number.

1310100020443 is a deficient number, since it is larger than the sum of its proper divisors (196335165).

1310100020443 is an equidigital number, since it uses as much as digits as its factorization.

1310100020443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196335164.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1310100020443 its reverse (3440200010131), we get a palindrome (4750300030574).

The spelling of 1310100020443 in words is "one trillion, three hundred ten billion, one hundred million, twenty thousand, four hundred forty-three".