123531331163 has 4 divisors (see below), whose sum is σ = 123546879600. Its totient is φ = 123515782728.

The previous prime is 123531331151. The next prime is 123531331201. The reversal of 123531331163 is 361133135321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123531331163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123531331103) 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 3 ways as a sum of consecutive naturals, for example, 7762295 + ... + 7778192.

It is an arithmetic number, because the mean of its divisors is an integer number (30886719900).

Almost surely, 2^123531331163 is an apocalyptic number.

123531331163 is a deficient number, since it is larger than the sum of its proper divisors (15548437).

123531331163 is an equidigital number, since it uses as much as digits as its factorization.

123531331163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15548436.

The product of its digits is 14580, while the sum is 32.

Adding to 123531331163 its reverse (361133135321), we get a palindrome (484664466484).

The spelling of 123531331163 in words is "one hundred twenty-three billion, five hundred thirty-one million, three hundred thirty-one thousand, one hundred sixty-three".