103231321 has 4 divisors (see below), whose sum is σ = 103260544. Its totient is φ = 103202100.

The previous prime is 103231319. The next prime is 103231339. The reversal of 103231321 is 123132301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 123132301 = 89 ⋅1383509.

It is a cyclic number.

It is not a de Polignac number, because 103231321 - 2¹ = 103231319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103231295 and 103231304.

It is not an unprimeable number, because it can be changed into a prime (103231621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8445 + ... + 16666.

It is an arithmetic number, because the mean of its divisors is an integer number (25815136).

Almost surely, 2^103231321 is an apocalyptic number.

It is an amenable number.

103231321 is a deficient number, since it is larger than the sum of its proper divisors (29223).

103231321 is an equidigital number, since it uses as much as digits as its factorization.

103231321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29222.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 103231321 is about 10160.2815413747. The cubic root of 103231321 is about 469.1054677089.

Adding to 103231321 its reverse (123132301), we get a palindrome (226363622).

The spelling of 103231321 in words is "one hundred three million, two hundred thirty-one thousand, three hundred twenty-one".