321600113 has 8 divisors (see below), whose sum is σ = 331354536. Its totient is φ = 311990400.

The previous prime is 321600089. The next prime is 321600143. The reversal of 321600113 is 311006123.

It can be written as a sum of positive squares in 4 ways, for example, as 222784 + 321377329 = 472^2 + 17927^2 .

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 321600113 - 2¹² = 321596017 is a prime.

It is a super-2 number, since 2×321600113² = 206853265363225538, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 321600091 and 321600100.

It is not an unprimeable number, because it can be changed into a prime (321600143) 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, 31658 + ... + 40563.

It is an arithmetic number, because the mean of its divisors is an integer number (41419317).

Almost surely, 2^321600113 is an apocalyptic number.

It is an amenable number.

321600113 is a deficient number, since it is larger than the sum of its proper divisors (9754423).

321600113 is an equidigital number, since it uses as much as digits as its factorization.

321600113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72355.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 321600113 is about 17933.2125677470. The cubic root of 321600113 is about 685.1285481661.

Adding to 321600113 its reverse (311006123), we get a palindrome (632606236).

The spelling of 321600113 in words is "three hundred twenty-one million, six hundred thousand, one hundred thirteen".