322405981 has 8 divisors (see below), whose sum is σ = 327116160. Its totient is φ = 317724288.

The previous prime is 322405961. The next prime is 322405991. The reversal of 322405981 is 189504223.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 322405981 - 2¹⁵ = 322373213 is a prime.

It is a super-2 number, since 2×322405981² = 207891233169144722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (322405931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16230 + ... + 30136.

It is an arithmetic number, because the mean of its divisors is an integer number (40889520).

Almost surely, 2^322405981 is an apocalyptic number.

It is an amenable number.

322405981 is a deficient number, since it is larger than the sum of its proper divisors (4710179).

322405981 is a wasteful number, since it uses less digits than its factorization.

322405981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14243.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 322405981 is about 17955.6670998323. The cubic root of 322405981 is about 685.7003376028.

The spelling of 322405981 in words is "three hundred twenty-two million, four hundred five thousand, nine hundred eighty-one".