103320321 has 16 divisors (see below), whose sum is σ = 149276736. Its totient is φ = 63187776.

The previous prime is 103320313. The next prime is 103320341. The reversal of 103320321 is 123023301.

It is not a de Polignac number, because 103320321 - 2³ = 103320313 is a prime.

It is a super-3 number, since 3×103320321³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 103320321.

It is not an unprimeable number, because it can be changed into a prime (103320341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1770 + ... + 14483.

It is an arithmetic number, because the mean of its divisors is an integer number (9329796).

Almost surely, 2^103320321 is an apocalyptic number.

It is an amenable number.

103320321 is a deficient number, since it is larger than the sum of its proper divisors (45956415).

103320321 is a wasteful number, since it uses less digits than its factorization.

103320321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16432.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 103320321 is about 10164.6603976719. The cubic root of 103320321 is about 469.2402407401.

Adding to 103320321 its reverse (123023301), we get a palindrome (226343622).

The spelling of 103320321 in words is "one hundred three million, three hundred twenty thousand, three hundred twenty-one".