321534121 has 8 divisors (see below), whose sum is σ = 327135944. Its totient is φ = 315964800.

The previous prime is 321534113. The next prime is 321534137. The reversal of 321534121 is 121435123.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 102819600 + 218714521 = 10140^2 + 14789^2 .

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 321534121 - 2³ = 321534113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321534092 and 321534101.

It is not an unprimeable number, because it can be changed into a prime (321534151) 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, 12271 + ... + 28171.

It is an arithmetic number, because the mean of its divisors is an integer number (40891993).

Almost surely, 2^321534121 is an apocalyptic number.

It is an amenable number.

321534121 is a deficient number, since it is larger than the sum of its proper divisors (5601823).

321534121 is a wasteful number, since it uses less digits than its factorization.

321534121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16251.

The product of its digits is 720, while the sum is 22.

The square root of 321534121 is about 17931.3725353081. The cubic root of 321534121 is about 685.0816824114.

Adding to 321534121 its reverse (121435123), we get a palindrome (442969244).

The spelling of 321534121 in words is "three hundred twenty-one million, five hundred thirty-four thousand, one hundred twenty-one".