123231031101 has 16 divisors (see below), whose sum is σ = 182570230720. Its totient is φ = 82151437680.

The previous prime is 123231031073. The next prime is 123231031109. The reversal of 123231031101 is 101130132321.

123231031101 is a `hidden beast` number, since 12 + 32 + 310 + 311 + 0 + 1 = 666.

It is not a de Polignac number, because 123231031101 - 2⁹ = 123231030589 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 (123231031109) 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 15 ways as a sum of consecutive naturals, for example, 1236726 + ... + 1332648.

It is an arithmetic number, because the mean of its divisors is an integer number (11410639420).

Almost surely, 2^123231031101 is an apocalyptic number.

It is an amenable number.

123231031101 is a deficient number, since it is larger than the sum of its proper divisors (59339199619).

123231031101 is an equidigital number, since it uses as much as digits as its factorization.

123231031101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143513 (or 143507 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 123231031101 its reverse (101130132321), we get a palindrome (224361163422).

The spelling of 123231031101 in words is "one hundred twenty-three billion, two hundred thirty-one million, thirty-one thousand, one hundred one".