1320311021203 has 4 divisors (see below), whose sum is σ = 1320481589728. Its totient is φ = 1320140452680.

The previous prime is 1320311021201. The next prime is 1320311021233. The reversal of 1320311021203 is 3021201130231.

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

It is a cyclic number.

It is not a de Polignac number, because 1320311021203 - 2¹ = 1320311021201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320311021201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85272651 + ... + 85288132.

It is an arithmetic number, because the mean of its divisors is an integer number (330120397432).

Almost surely, 2^{1320311021203} is an apocalyptic number.

1320311021203 is a deficient number, since it is larger than the sum of its proper divisors (170568525).

1320311021203 is an equidigital number, since it uses as much as digits as its factorization.

1320311021203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170568524.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1320311021203 its reverse (3021201130231), we get a palindrome (4341512151434).

The spelling of 1320311021203 in words is "one trillion, three hundred twenty billion, three hundred eleven million, twenty-one thousand, two hundred three".