231031033311103 has 4 divisors (see below), whose sum is σ = 231061686235360. Its totient is φ = 231000380386848.

The previous prime is 231031033311053. The next prime is 231031033311121. The reversal of 231031033311103 is 301113330130132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231031033311103 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 (231031033311203) 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, 15326450823 + ... + 15326465896.

It is an arithmetic number, because the mean of its divisors is an integer number (57765421558840).

Almost surely, 2^{231031033311103} is an apocalyptic number.

231031033311103 is a deficient number, since it is larger than the sum of its proper divisors (30652924257).

231031033311103 is an equidigital number, since it uses as much as digits as its factorization.

231031033311103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30652924256.

The product of its (nonzero) digits is 1458, while the sum is 25.

Adding to 231031033311103 its reverse (301113330130132), we get a palindrome (532144363441235).

The spelling of 231031033311103 in words is "two hundred thirty-one trillion, thirty-one billion, thirty-three million, three hundred eleven thousand, one hundred three".