1331220313303 has 4 divisors (see below), whose sum is σ = 1331331883128. Its totient is φ = 1331108743480.

The previous prime is 1331220313271. The next prime is 1331220313307. The reversal of 1331220313303 is 3033130221331.

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 1331220313303 - 2⁵ = 1331220313271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331220313307) 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, 55767013 + ... + 55790878.

It is an arithmetic number, because the mean of its divisors is an integer number (332832970782).

Almost surely, 2^{1331220313303} is an apocalyptic number.

1331220313303 is a deficient number, since it is larger than the sum of its proper divisors (111569825).

1331220313303 is a wasteful number, since it uses less digits than its factorization.

1331220313303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111569824.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 1331220313303 its reverse (3033130221331), we get a palindrome (4364350534634).

The spelling of 1331220313303 in words is "one trillion, three hundred thirty-one billion, two hundred twenty million, three hundred thirteen thousand, three hundred three".