231103303020321 has 4 divisors (see below), whose sum is σ = 308137737360432. Its totient is φ = 154068868680212.

The previous prime is 231103303020313. The next prime is 231103303020389. The reversal of 231103303020321 is 123020303301132.

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.

It is a cyclic number.

It is not a de Polignac number, because 231103303020321 - 2³ = 231103303020313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231103303020291 and 231103303020300.

It is not an unprimeable number, because it can be changed into a prime (231103303020391) 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, 38517217170051 + ... + 38517217170056.

It is an arithmetic number, because the mean of its divisors is an integer number (77034434340108).

Almost surely, 2^{231103303020321} is an apocalyptic number.

It is an amenable number.

231103303020321 is a deficient number, since it is larger than the sum of its proper divisors (77034434340111).

231103303020321 is an equidigital number, since it uses as much as digits as its factorization.

231103303020321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77034434340110.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 231103303020321 its reverse (123020303301132), we get a palindrome (354123606321453).

The spelling of 231103303020321 in words is "two hundred thirty-one trillion, one hundred three billion, three hundred three million, twenty thousand, three hundred twenty-one".