282940321 has 2 divisors, whose sum is σ = 282940322. Its totient is φ = 282940320.

The previous prime is 282940313. The next prime is 282940337. The reversal of 282940321 is 123049282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 279558400 + 3381921 = 16720^2 + 1839^2 .

It is a cyclic number.

It is not a de Polignac number, because 282940321 - 2³ = 282940313 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (282940351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141470160 + 141470161.

It is an arithmetic number, because the mean of its divisors is an integer number (141470161).

Almost surely, 2^282940321 is an apocalyptic number.

It is an amenable number.

282940321 is a deficient number, since it is larger than the sum of its proper divisors (1).

282940321 is an equidigital number, since it uses as much as digits as its factorization.

282940321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 282940321 is about 16820.8299735774. The cubic root of 282940321 is about 656.4952890346.

The spelling of 282940321 in words is "two hundred eighty-two million, nine hundred forty thousand, three hundred twenty-one".