1321032239 has 2 divisors, whose sum is σ = 1321032240. Its totient is φ = 1321032238.

The previous prime is 1321032203. The next prime is 1321032269. The reversal of 1321032239 is 9322301231.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321032239 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321032269) 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, 660516119 + 660516120.

It is an arithmetic number, because the mean of its divisors is an integer number (660516120).

Almost surely, 2^1321032239 is an apocalyptic number.

1321032239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321032239 is an equidigital number, since it uses as much as digits as its factorization.

1321032239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 1321032239 is about 36346.0071947387. The cubic root of 1321032239 is about 1097.2471769549.

The spelling of 1321032239 in words is "one billion, three hundred twenty-one million, thirty-two thousand, two hundred thirty-nine".