231032031123 has 4 divisors (see below), whose sum is σ = 308042708168. Its totient is φ = 154021354080.

The previous prime is 231032031107. The next prime is 231032031161. The reversal of 231032031123 is 321130230132.

231032031123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 231032031123 - 2⁴ = 231032031107 is a prime.

It is a super-3 number, since 3×231032031123³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231032031123.

It is not an unprimeable number, because it can be changed into a prime (231032031103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38505338518 + ... + 38505338523.

It is an arithmetic number, because the mean of its divisors is an integer number (77010677042).

Almost surely, 2^231032031123 is an apocalyptic number.

231032031123 is a deficient number, since it is larger than the sum of its proper divisors (77010677045).

231032031123 is an equidigital number, since it uses as much as digits as its factorization.

231032031123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77010677044.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 231032031123 its reverse (321130230132), we get a palindrome (552162261255).

The spelling of 231032031123 in words is "two hundred thirty-one billion, thirty-two million, thirty-one thousand, one hundred twenty-three".