1299731333 has 2 divisors, whose sum is σ = 1299731334. Its totient is φ = 1299731332.

The previous prime is 1299731273. The next prime is 1299731339. The reversal of 1299731333 is 3331379921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1290102724 + 9628609 = 35918^2 + 3103^2 .

It is an emirp because it is prime and its reverse (3331379921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1299731333 - 2²⁰ = 1298682757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1299731339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649865666 + 649865667.

It is an arithmetic number, because the mean of its divisors is an integer number (649865667).

Almost surely, 2^1299731333 is an apocalyptic number.

It is an amenable number.

1299731333 is a deficient number, since it is larger than the sum of its proper divisors (1).

1299731333 is an equidigital number, since it uses as much as digits as its factorization.

1299731333 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 91854, while the sum is 41.

The square root of 1299731333 is about 36051.7868211827. The cubic root of 1299731333 is about 1091.3176929448.

The spelling of 1299731333 in words is "one billion, two hundred ninety-nine million, seven hundred thirty-one thousand, three hundred thirty-three".