231011331312123 has 24 divisors (see below), whose sum is σ = 338406916393728. Its totient is φ = 151840474589232.

The previous prime is 231011331312121. The next prime is 231011331312161. The reversal of 231011331312123 is 321213133110132.

231011331312123 is a `hidden beast` number, since 2 + 3 + 1 + 0 + 1 + 1 + 331 + 312 + 12 + 3 = 666.

231011331312123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231011331312123 - 2¹ = 231011331312121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231011331312121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 548695215 + ... + 549116072.

It is an arithmetic number, because the mean of its divisors is an integer number (14100288183072).

Almost surely, 2^{231011331312123} is an apocalyptic number.

231011331312123 is a deficient number, since it is larger than the sum of its proper divisors (107395585081605).

231011331312123 is a wasteful number, since it uses less digits than its factorization.

231011331312123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097811623 (or 1097811620 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

Adding to 231011331312123 its reverse (321213133110132), we get a palindrome (552224464422255).

The spelling of 231011331312123 in words is "two hundred thirty-one trillion, eleven billion, three hundred thirty-one million, three hundred twelve thousand, one hundred twenty-three".