123231101123 has 16 divisors (see below), whose sum is σ = 136032410976. Its totient is φ = 110913546240.

The previous prime is 123231101111. The next prime is 123231101171. The reversal of 123231101123 is 321101132321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 123231101123 - 2¹⁰ = 123231100099 is a prime.

It is a super-2 number, since 2×123231101123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123231101095 and 123231101104.

It is not an unprimeable number, because it can be changed into a prime (123231101923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131513 + ... + 513573.

It is an arithmetic number, because the mean of its divisors is an integer number (8502025686).

Almost surely, 2^123231101123 is an apocalyptic number.

123231101123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

123231101123 is a deficient number, since it is larger than the sum of its proper divisors (12801309853).

123231101123 is a wasteful number, since it uses less digits than its factorization.

123231101123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382694.

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

Adding to 123231101123 its reverse (321101132321), we get a palindrome (444332233444).

The spelling of 123231101123 in words is "one hundred twenty-three billion, two hundred thirty-one million, one hundred one thousand, one hundred twenty-three".