321538349 has 8 divisors (see below), whose sum is σ = 369230880. Its totient is φ = 276922800.

The previous prime is 321538331. The next prime is 321538351. The reversal of 321538349 is 943835123.

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

It is not a de Polignac number, because 321538349 - 2²⁴ = 304761133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321538549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 769022 + ... + 769439.

It is an arithmetic number, because the mean of its divisors is an integer number (46153860).

Almost surely, 2^321538349 is an apocalyptic number.

It is an amenable number.

321538349 is a deficient number, since it is larger than the sum of its proper divisors (47692531).

321538349 is a wasteful number, since it uses less digits than its factorization.

321538349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538491.

The product of its digits is 77760, while the sum is 38.

The square root of 321538349 is about 17931.4904288517. The cubic root of 321538349 is about 685.0846852162.

The spelling of 321538349 in words is "three hundred twenty-one million, five hundred thirty-eight thousand, three hundred forty-nine".