103231203221 has 4 divisors (see below), whose sum is σ = 104253294444. Its totient is φ = 102209112000.

The previous prime is 103231203217. The next prime is 103231203259. The reversal of 103231203221 is 122302132301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45205138225 + 58026064996 = 212615^2 + 240886^2 .

It is a cyclic number.

It is not a de Polignac number, because 103231203221 - 2² = 103231203217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103231203193 and 103231203202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103231203211) 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, 511045460 + ... + 511045661.

It is an arithmetic number, because the mean of its divisors is an integer number (26063323611).

Almost surely, 2^103231203221 is an apocalyptic number.

It is an amenable number.

103231203221 is a deficient number, since it is larger than the sum of its proper divisors (1022091223).

103231203221 is a wasteful number, since it uses less digits than its factorization.

103231203221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022091222.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 103231203221 its reverse (122302132301), we get a palindrome (225533335522).

The spelling of 103231203221 in words is "one hundred three billion, two hundred thirty-one million, two hundred three thousand, two hundred twenty-one".