1231032110123 has 4 divisors (see below), whose sum is σ = 1231410543168. Its totient is φ = 1230653677080.

The previous prime is 1231032110081. The next prime is 1231032110141. The reversal of 1231032110123 is 3210112301321.

It is a happy number.

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 1231032110123 - 2¹⁶ = 1231032044587 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231032110095 and 1231032110104.

It is not an unprimeable number, because it can be changed into a prime (1231032110183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189211643 + ... + 189218148.

It is an arithmetic number, because the mean of its divisors is an integer number (307852635792).

Almost surely, 2^{1231032110123} is an apocalyptic number.

1231032110123 is a deficient number, since it is larger than the sum of its proper divisors (378433045).

1231032110123 is an equidigital number, since it uses as much as digits as its factorization.

1231032110123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378433044.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1231032110123 its reverse (3210112301321), we get a palindrome (4441144411444).

The spelling of 1231032110123 in words is "one trillion, two hundred thirty-one billion, thirty-two million, one hundred ten thousand, one hundred twenty-three".