1320032281 has 2 divisors, whose sum is σ = 1320032282. Its totient is φ = 1320032280.

The previous prime is 1320032279. The next prime is 1320032291. The reversal of 1320032281 is 1822300231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1259114256 + 60918025 = 35484^2 + 7805^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320032281 - 2¹ = 1320032279 is a prime.

It is a super-3 number, since 3×1320032281³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 1320032279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1320032291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660016140 + 660016141.

It is an arithmetic number, because the mean of its divisors is an integer number (660016141).

Almost surely, 2^1320032281 is an apocalyptic number.

It is an amenable number.

1320032281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320032281 is an equidigital number, since it uses as much as digits as its factorization.

1320032281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1320032281 is about 36332.2484990951. The cubic root of 1320032281 is about 1096.9702525874.

The spelling of 1320032281 in words is "one billion, three hundred twenty million, thirty-two thousand, two hundred eighty-one".