323220681 has 12 divisors (see below), whose sum is σ = 533570752. Its totient is φ = 184697496.

The previous prime is 323220673. The next prime is 323220691. The reversal of 323220681 is 186022323.

It is not a de Polignac number, because 323220681 - 2³ = 323220673 is a prime.

It is a super-2 number, since 2×323220681² = 208943217252207522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (323220661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2565181 + ... + 2565306.

Almost surely, 2^323220681 is an apocalyptic number.

It is an amenable number.

323220681 is a deficient number, since it is larger than the sum of its proper divisors (210350071).

323220681 is a wasteful number, since it uses less digits than its factorization.

323220681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5130500 (or 5130497 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 323220681 is about 17978.3392169577. The cubic root of 323220681 is about 686.2774259197.

The spelling of 323220681 in words is "three hundred twenty-three million, two hundred twenty thousand, six hundred eighty-one".