1331040323 has 2 divisors, whose sum is σ = 1331040324. Its totient is φ = 1331040322.

The previous prime is 1331040299. The next prime is 1331040341. The reversal of 1331040323 is 3230401331.

It is a strong prime.

It is an emirp because it is prime and its reverse (3230401331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1331040323 - 2⁶ = 1331040259 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1331040295 and 1331040304.

It is not a weakly prime, because it can be changed into another prime (1331040343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665520161 + 665520162.

It is an arithmetic number, because the mean of its divisors is an integer number (665520162).

Almost surely, 2^1331040323 is an apocalyptic number.

1331040323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331040323 is an equidigital number, since it uses as much as digits as its factorization.

1331040323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 1331040323 is about 36483.4253189034. The cubic root of 1331040323 is about 1100.0111081523.

Adding to 1331040323 its reverse (3230401331), we get a palindrome (4561441654).

The spelling of 1331040323 in words is "one billion, three hundred thirty-one million, forty thousand, three hundred twenty-three".