1331103221323 has 4 divisors (see below), whose sum is σ = 1388977274448. Its totient is φ = 1273229168200.

The previous prime is 1331103221309. The next prime is 1331103221333. The reversal of 1331103221323 is 3231223011331.

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-1331103221323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331103221333) 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, 28937026528 + ... + 28937026573.

It is an arithmetic number, because the mean of its divisors is an integer number (347244318612).

Almost surely, 2^{1331103221323} is an apocalyptic number.

1331103221323 is a deficient number, since it is larger than the sum of its proper divisors (57874053125).

1331103221323 is an equidigital number, since it uses as much as digits as its factorization.

1331103221323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57874053124.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1331103221323 its reverse (3231223011331), we get a palindrome (4562326232654).

The spelling of 1331103221323 in words is "one trillion, three hundred thirty-one billion, one hundred three million, two hundred twenty-one thousand, three hundred twenty-three".