100331010123 has 4 divisors (see below), whose sum is σ = 133774680168. Its totient is φ = 66887340080.

The previous prime is 100331010103. The next prime is 100331010181. The reversal of 100331010123 is 321010133001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321010133001 = 3 ⋅107003377667.

It is a cyclic number.

It is not a de Polignac number, because 100331010123 - 2¹⁰ = 100331009099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100331010103) 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 3 ways as a sum of consecutive naturals, for example, 16721835018 + ... + 16721835023.

It is an arithmetic number, because the mean of its divisors is an integer number (33443670042).

Almost surely, 2^100331010123 is an apocalyptic number.

100331010123 is a deficient number, since it is larger than the sum of its proper divisors (33443670045).

100331010123 is an equidigital number, since it uses as much as digits as its factorization.

100331010123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33443670044.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 100331010123 its reverse (321010133001), we get a palindrome (421341143124).

The spelling of 100331010123 in words is "one hundred billion, three hundred thirty-one million, ten thousand, one hundred twenty-three".