1231230120023 has 4 divisors (see below), whose sum is σ = 1231249303200. Its totient is φ = 1231210936848.

The previous prime is 1231230120019. The next prime is 1231230120053. The reversal of 1231230120023 is 3200210321321.

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 1231230120023 - 2² = 1231230120019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231230119977 and 1231230120004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231230120053) 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, 9494990 + ... + 9623787.

It is an arithmetic number, because the mean of its divisors is an integer number (307812325800).

Almost surely, 2^{1231230120023} is an apocalyptic number.

1231230120023 is a deficient number, since it is larger than the sum of its proper divisors (19183177).

1231230120023 is an equidigital number, since it uses as much as digits as its factorization.

1231230120023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19183176.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1231230120023 its reverse (3200210321321), we get a palindrome (4431440441344).

The spelling of 1231230120023 in words is "one trillion, two hundred thirty-one billion, two hundred thirty million, one hundred twenty thousand, twenty-three".