103908321 has 48 divisors (see below), whose sum is σ = 177128640. Its totient is φ = 58008960.

The previous prime is 103908317. The next prime is 103908331. The reversal of 103908321 is 123809301.

It is not a de Polignac number, because 103908321 - 2² = 103908317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (103908331) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68851 + ... + 70343.

It is an arithmetic number, because the mean of its divisors is an integer number (3690180).

Almost surely, 2^103908321 is an apocalyptic number.

103908321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

103908321 is a deficient number, since it is larger than the sum of its proper divisors (73220319).

103908321 is a wasteful number, since it uses less digits than its factorization.

103908321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566 (or 1563 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 103908321 is about 10193.5431033571. The cubic root of 103908321 is about 470.1287122961.

The spelling of 103908321 in words is "one hundred three million, nine hundred eight thousand, three hundred twenty-one".