131018594812 has 24 divisors (see below), whose sum is σ = 273430112256. Its totient is φ = 53709485808.

The previous prime is 131018594801. The next prime is 131018594887. The reversal of 131018594812 is 218495810131.

It is a super-2 number, since 2×131018594812² (a number of 23 digits) contains 22 as substring.

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, 101721868 + ... + 101723155.

It is an arithmetic number, because the mean of its divisors is an integer number (11392921344).

Almost surely, 2^131018594812 is an apocalyptic number.

It is an amenable number.

131018594812 is an abundant number, since it is smaller than the sum of its proper divisors (142411517444).

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

131018594812 is a wasteful number, since it uses less digits than its factorization.

131018594812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203445057 (or 203445055 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 43.

The spelling of 131018594812 in words is "one hundred thirty-one billion, eighteen million, five hundred ninety-four thousand, eight hundred twelve".