321673969 has 4 divisors (see below), whose sum is σ = 328518144. Its totient is φ = 314829796.

The previous prime is 321673909. The next prime is 321673973. The reversal of 321673969 is 969376123.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 969376123 = 23599 ⋅41077.

It is a cyclic number.

It is not a de Polignac number, because 321673969 - 2¹¹ = 321671921 is a prime.

It is a super-2 number, since 2×321673969² = 206948284664425922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321673909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3422017 + ... + 3422110.

It is an arithmetic number, because the mean of its divisors is an integer number (82129536).

Almost surely, 2^321673969 is an apocalyptic number.

It is an amenable number.

321673969 is a deficient number, since it is larger than the sum of its proper divisors (6844175).

321673969 is an equidigital number, since it uses as much as digits as its factorization.

321673969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6844174.

The product of its digits is 367416, while the sum is 46.

The square root of 321673969 is about 17935.2716455592. The cubic root of 321673969 is about 685.1809911214.

The spelling of 321673969 in words is "three hundred twenty-one million, six hundred seventy-three thousand, nine hundred sixty-nine".