1331043323 has 2 divisors, whose sum is σ = 1331043324. Its totient is φ = 1331043322.

The previous prime is 1331043317. The next prime is 1331043359. The reversal of 1331043323 is 3233401331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1331043323 - 2²⁰ = 1329994747 is a prime.

It is not a weakly prime, because it can be changed into another prime (1331043523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665521661 + 665521662.

It is an arithmetic number, because the mean of its divisors is an integer number (665521662).

Almost surely, 2^1331043323 is an apocalyptic number.

1331043323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331043323 is an equidigital number, since it uses as much as digits as its factorization.

1331043323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 23.

The square root of 1331043323 is about 36483.4664334408. The cubic root of 1331043323 is about 1100.0119345813.

Adding to 1331043323 its reverse (3233401331), we get a palindrome (4564444654).

The spelling of 1331043323 in words is "one billion, three hundred thirty-one million, forty-three thousand, three hundred twenty-three".