321332397 has 8 divisors (see below), whose sum is σ = 430282944. Its totient is φ = 213301728.

The previous prime is 321332381. The next prime is 321332399. The reversal of 321332397 is 793233123.

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

It is not a de Polignac number, because 321332397 - 2⁴ = 321332381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321332399) 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, 229153 + ... + 230550.

It is an arithmetic number, because the mean of its divisors is an integer number (53785368).

Almost surely, 2^321332397 is an apocalyptic number.

It is an amenable number.

321332397 is a deficient number, since it is larger than the sum of its proper divisors (108950547).

321332397 is a wasteful number, since it uses less digits than its factorization.

321332397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459939.

The product of its digits is 20412, while the sum is 33.

The square root of 321332397 is about 17925.7467626875. The cubic root of 321332397 is about 684.9383836456.

The spelling of 321332397 in words is "three hundred twenty-one million, three hundred thirty-two thousand, three hundred ninety-seven".