1320031021043 has 16 divisors (see below), whose sum is σ = 1588279680000. Its totient is φ = 1071720994752.

The previous prime is 1320031020899. The next prime is 1320031021069. The reversal of 1320031021043 is 3401201300231.

It is a cyclic number.

It is not a de Polignac number, because 1320031021043 - 2¹² = 1320031016947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320031023043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70523 + ... + 1626356.

It is an arithmetic number, because the mean of its divisors is an integer number (99267480000).

Almost surely, 2^{1320031021043} is an apocalyptic number.

1320031021043 is a deficient number, since it is larger than the sum of its proper divisors (268248658957).

1320031021043 is a wasteful number, since it uses less digits than its factorization.

1320031021043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702754.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1320031021043 its reverse (3401201300231), we get a palindrome (4721232321274).

The spelling of 1320031021043 in words is "one trillion, three hundred twenty billion, thirty-one million, twenty-one thousand, forty-three".