1321131283 has 2 divisors, whose sum is σ = 1321131284. Its totient is φ = 1321131282.

The previous prime is 1321131277. The next prime is 1321131359. The reversal of 1321131283 is 3821311231.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1321131283 - 2⁹ = 1321130771 is a prime.

It is not a weakly prime, because it can be changed into another prime (1321131263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660565641 + 660565642.

It is an arithmetic number, because the mean of its divisors is an integer number (660565642).

Almost surely, 2^1321131283 is an apocalyptic number.

1321131283 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321131283 is an equidigital number, since it uses as much as digits as its factorization.

1321131283 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 25.

The square root of 1321131283 is about 36347.3696847516. The cubic root of 1321131283 is about 1097.2745981968.

The spelling of 1321131283 in words is "one billion, three hundred twenty-one million, one hundred thirty-one thousand, two hundred eighty-three".