103231221 has 8 divisors (see below), whose sum is σ = 141361824. Its totient is φ = 66960720.

The previous prime is 103231207. The next prime is 103231253. The reversal of 103231221 is 122132301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 103231221 - 2⁹ = 103230709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 103231221.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 464895 + ... + 465116.

It is an arithmetic number, because the mean of its divisors is an integer number (17670228).

Almost surely, 2^103231221 is an apocalyptic number.

It is an amenable number.

103231221 is a deficient number, since it is larger than the sum of its proper divisors (38130603).

103231221 is an equidigital number, since it uses as much as digits as its factorization.

103231221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930051.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 103231221 is about 10160.2766202501. The cubic root of 103231221 is about 469.1053162350.

Adding to 103231221 its reverse (122132301), we get a palindrome (225363522).

The spelling of 103231221 in words is "one hundred three million, two hundred thirty-one thousand, two hundred twenty-one".