123531331164 has 24 divisors (see below), whose sum is σ = 305195053968. Its totient is φ = 38754927360.

The previous prime is 123531331151. The next prime is 123531331201. The reversal of 123531331164 is 461133135321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302772667 + ... + 302773074.

It is an arithmetic number, because the mean of its divisors is an integer number (12716460582).

Almost surely, 2^123531331164 is an apocalyptic number.

It is an amenable number.

123531331164 is an abundant number, since it is smaller than the sum of its proper divisors (181663722804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123531331164 is a wasteful number, since it uses less digits than its factorization.

123531331164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605545765 (or 605545763 counting only the distinct ones).

The product of its digits is 19440, while the sum is 33.

Adding to 123531331164 its reverse (461133135321), we get a palindrome (584664466485).

The spelling of 123531331164 in words is "one hundred twenty-three billion, five hundred thirty-one million, three hundred thirty-one thousand, one hundred sixty-four".