100123023231 has 24 divisors (see below), whose sum is σ = 180308129664. Its totient is φ = 52011959760.

The previous prime is 100123023211. The next prime is 100123023263. The reversal of 100123023231 is 132320321001.

It is not a de Polignac number, because 100123023231 - 2⁹ = 100123022719 is a prime.

It is a super-2 number, since 2×100123023231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100123023211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72238141 + ... + 72239526.

It is an arithmetic number, because the mean of its divisors is an integer number (7512838736).

Almost surely, 2^100123023231 is an apocalyptic number.

100123023231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

100123023231 is a deficient number, since it is larger than the sum of its proper divisors (80185106433).

100123023231 is a wasteful number, since it uses less digits than its factorization.

100123023231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144477691 (or 144477688 counting only the distinct ones).

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

Adding to 100123023231 its reverse (132320321001), we get a palindrome (232443344232).

The spelling of 100123023231 in words is "one hundred billion, one hundred twenty-three million, twenty-three thousand, two hundred thirty-one".