322430981 has 2 divisors, whose sum is σ = 322430982. Its totient is φ = 322430980.

The previous prime is 322430963. The next prime is 322431037. The reversal of 322430981 is 189034223.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 319336900 + 3094081 = 17870^2 + 1759^2 .

It is a cyclic number.

It is not a de Polignac number, because 322430981 - 2¹⁴ = 322414597 is a prime.

It is a super-2 number, since 2×322430981² = 207923475017244722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (322450981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161215490 + 161215491.

It is an arithmetic number, because the mean of its divisors is an integer number (161215491).

Almost surely, 2^322430981 is an apocalyptic number.

It is an amenable number.

322430981 is a deficient number, since it is larger than the sum of its proper divisors (1).

322430981 is an equidigital number, since it uses as much as digits as its factorization.

322430981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 322430981 is about 17956.3632453791. The cubic root of 322430981 is about 685.7180606666.

The spelling of 322430981 in words is "three hundred twenty-two million, four hundred thirty thousand, nine hundred eighty-one".