1231023200123 has 8 divisors (see below), whose sum is σ = 1304957274192. Its totient is φ = 1157258119936.

The previous prime is 1231023200111. The next prime is 1231023200129. The reversal of 1231023200123 is 3210023201321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1231023200123 - 2¹² = 1231023196027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231023200095 and 1231023200104.

It is not an unprimeable number, because it can be changed into a prime (1231023200129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42233465 + ... + 42262602.

It is an arithmetic number, because the mean of its divisors is an integer number (163119659274).

Almost surely, 2^{1231023200123} is an apocalyptic number.

1231023200123 is a deficient number, since it is larger than the sum of its proper divisors (73934074069).

1231023200123 is an equidigital number, since it uses as much as digits as its factorization.

1231023200123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84496941.

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

Adding to 1231023200123 its reverse (3210023201321), we get a palindrome (4441046401444).

The spelling of 1231023200123 in words is "one trillion, two hundred thirty-one billion, twenty-three million, two hundred thousand, one hundred twenty-three".