123011203023 has 48 divisors (see below), whose sum is σ = 190165060800. Its totient is φ = 76352855040.

The previous prime is 123011203019. The next prime is 123011203037. The reversal of 123011203023 is 320302110321.

It is not a de Polignac number, because 123011203023 - 2² = 123011203019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123011202987 and 123011203005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123011203043) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11017918 + ... + 11029076.

It is an arithmetic number, because the mean of its divisors is an integer number (3961772100).

Almost surely, 2^123011203023 is an apocalyptic number.

123011203023 is a deficient number, since it is larger than the sum of its proper divisors (67153857777).

123011203023 is a wasteful number, since it uses less digits than its factorization.

123011203023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11952 (or 11949 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 123011203023 its reverse (320302110321), we get a palindrome (443313313344).

The spelling of 123011203023 in words is "one hundred twenty-three billion, eleven million, two hundred three thousand, twenty-three".