13231031123203 has 4 divisors (see below), whose sum is σ = 13312203093448. Its totient is φ = 13149859152960.

The previous prime is 13231031123119. The next prime is 13231031123207. The reversal of 13231031123203 is 30232113013231.

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

It is a cyclic number.

It is not a de Polignac number, because 13231031123203 - 2²¹ = 13231029026051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13231031123207) 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, 40585984878 + ... + 40585985203.

It is an arithmetic number, because the mean of its divisors is an integer number (3328050773362).

Almost surely, 2^{13231031123203} is an apocalyptic number.

13231031123203 is a deficient number, since it is larger than the sum of its proper divisors (81171970245).

13231031123203 is an equidigital number, since it uses as much as digits as its factorization.

13231031123203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81171970244.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 13231031123203 its reverse (30232113013231), we get a palindrome (43463144136434).

The spelling of 13231031123203 in words is "thirteen trillion, two hundred thirty-one billion, thirty-one million, one hundred twenty-three thousand, two hundred three".