123872108331 has 16 divisors (see below), whose sum is σ = 177554649600. Its totient is φ = 76570439328.

The previous prime is 123872108329. The next prime is 123872108359. The reversal of 123872108331 is 133801278321.

It is not a de Polignac number, because 123872108331 - 2¹ = 123872108329 is a prime.

It is a super-2 number, since 2×123872108331² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123872108331.

It is not an unprimeable number, because it can be changed into a prime (123872188331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23116416 + ... + 23121773.

It is an arithmetic number, because the mean of its divisors is an integer number (11097165600).

Almost surely, 2^123872108331 is an apocalyptic number.

123872108331 is a deficient number, since it is larger than the sum of its proper divisors (53682541269).

123872108331 is a wasteful number, since it uses less digits than its factorization.

123872108331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46238258.

The product of its (nonzero) digits is 48384, while the sum is 39.

The spelling of 123872108331 in words is "one hundred twenty-three billion, eight hundred seventy-two million, one hundred eight thousand, three hundred thirty-one".