103231310221 has 16 divisors (see below), whose sum is σ = 119641436208. Its totient is φ = 88214860800.

The previous prime is 103231310213. The next prime is 103231310243. The reversal of 103231310221 is 122013132301.

It can be written as a sum of positive squares in 8 ways, for example, as 13779472996 + 89451837225 = 117386^2 + 299085^2 .

It is a cyclic number.

It is not a de Polignac number, because 103231310221 - 2³ = 103231310213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103231310821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3815290 + ... + 3842251.

It is an arithmetic number, because the mean of its divisors is an integer number (7477589763).

Almost surely, 2^103231310221 is an apocalyptic number.

It is an amenable number.

103231310221 is a deficient number, since it is larger than the sum of its proper divisors (16410125987).

103231310221 is a wasteful number, since it uses less digits than its factorization.

103231310221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7657632.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 103231310221 its reverse (122013132301), we get a palindrome (225244442522).

The spelling of 103231310221 in words is "one hundred three billion, two hundred thirty-one million, three hundred ten thousand, two hundred twenty-one".