1232123131103 has 4 divisors (see below), whose sum is σ = 1236703514760. Its totient is φ = 1227542747448.

The previous prime is 1232123131087. The next prime is 1232123131111. The reversal of 1232123131103 is 3011313212321.

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 1232123131103 - 2⁴ = 1232123131087 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 (1232123131193) 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, 2290191425 + ... + 2290191962.

It is an arithmetic number, because the mean of its divisors is an integer number (309175878690).

Almost surely, 2^{1232123131103} is an apocalyptic number.

1232123131103 is a deficient number, since it is larger than the sum of its proper divisors (4580383657).

1232123131103 is an equidigital number, since it uses as much as digits as its factorization.

1232123131103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4580383656.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1232123131103 its reverse (3011313212321), we get a palindrome (4243436343424).

The spelling of 1232123131103 in words is "one trillion, two hundred thirty-two billion, one hundred twenty-three million, one hundred thirty-one thousand, one hundred three".