123531711189 has 8 divisors (see below), whose sum is σ = 169160541600. Its totient is φ = 80128677456.

The previous prime is 123531711187. The next prime is 123531711197. The reversal of 123531711189 is 981117135321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123531711189 - 2¹ = 123531711187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123531711189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123531711187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 556449039 + ... + 556449260.

It is an arithmetic number, because the mean of its divisors is an integer number (21145067700).

Almost surely, 2^123531711189 is an apocalyptic number.

It is an amenable number.

123531711189 is a deficient number, since it is larger than the sum of its proper divisors (45628830411).

123531711189 is a wasteful number, since it uses less digits than its factorization.

123531711189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112898339.

The product of its digits is 45360, while the sum is 42.

The spelling of 123531711189 in words is "one hundred twenty-three billion, five hundred thirty-one million, seven hundred eleven thousand, one hundred eighty-nine".