123758238231 has 16 divisors (see below), whose sum is σ = 183355744000. Its totient is φ = 82500899544.

The previous prime is 123758238211. The next prime is 123758238283. The reversal of 123758238231 is 132832857321.

123758238231 is a `hidden beast` number, since 1 + 2 + 3 + 7 + 582 + 38 + 2 + 31 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-123758238231 is a prime.

It is a super-3 number, since 3×123758238231³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123758238211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407220 + ... + 642918.

It is an arithmetic number, because the mean of its divisors is an integer number (11459734000).

Almost surely, 2^123758238231 is an apocalyptic number.

123758238231 is a deficient number, since it is larger than the sum of its proper divisors (59597505769).

123758238231 is a wasteful number, since it uses less digits than its factorization.

123758238231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255155 (or 255149 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The spelling of 123758238231 in words is "one hundred twenty-three billion, seven hundred fifty-eight million, two hundred thirty-eight thousand, two hundred thirty-one".