1020331355843 has 8 divisors (see below), whose sum is σ = 1029787189200. Its totient is φ = 1010877249888.

The previous prime is 1020331355821. The next prime is 1020331355893. The reversal of 1020331355843 is 3485531330201.

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 1020331355843 - 2¹² = 1020331351747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020331355797 and 1020331355806.

It is not an unprimeable number, because it can be changed into a prime (1020331355893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 770405 + ... + 1623017.

It is an arithmetic number, because the mean of its divisors is an integer number (128723398650).

Almost surely, 2^{1020331355843} is an apocalyptic number.

1020331355843 is a deficient number, since it is larger than the sum of its proper divisors (9455833357).

1020331355843 is a wasteful number, since it uses less digits than its factorization.

1020331355843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863701.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 1020331355843 in words is "one trillion, twenty billion, three hundred thirty-one million, three hundred fifty-five thousand, eight hundred forty-three".