1324920281 has 2 divisors, whose sum is σ = 1324920282. Its totient is φ = 1324920280.

The previous prime is 1324920239. The next prime is 1324920283. The reversal of 1324920281 is 1820294231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1157088256 + 167832025 = 34016^2 + 12955^2 .

It is a cyclic number.

It is not a de Polignac number, because 1324920281 - 2¹⁴ = 1324903897 is a prime.

It is a super-2 number, since 2×1324920281² = 3510827502010237922, which contains 22 as substring.

Together with 1324920283, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1324920283) 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, 662460140 + 662460141.

It is an arithmetic number, because the mean of its divisors is an integer number (662460141).

Almost surely, 2^1324920281 is an apocalyptic number.

It is an amenable number.

1324920281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1324920281 is an equidigital number, since it uses as much as digits as its factorization.

1324920281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1324920281 is about 36399.4544052517. The cubic root of 1324920281 is about 1098.3225896672.

The spelling of 1324920281 in words is "one billion, three hundred twenty-four million, nine hundred twenty thousand, two hundred eighty-one".