131011409999956 has 24 divisors (see below), whose sum is σ = 231469329278880. Its totient is φ = 64877814453600.

The previous prime is 131011409999927. The next prime is 131011409999957. The reversal of 131011409999956 is 659999904110131.

131011409999956 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 131011409999891 and 131011409999900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131011409999957) 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, 61264210 + ... + 63366601.

It is an arithmetic number, because the mean of its divisors is an integer number (9644555386620).

Almost surely, 2^{131011409999956} is an apocalyptic number.

It is an amenable number.

131011409999956 is a deficient number, since it is larger than the sum of its proper divisors (100457919278924).

131011409999956 is a wasteful number, since it uses less digits than its factorization.

131011409999956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124633335 (or 124633333 counting only the distinct ones).

The product of its (nonzero) digits is 21257640, while the sum is 67.

The spelling of 131011409999956 in words is "one hundred thirty-one trillion, eleven billion, four hundred nine million, nine hundred ninety-nine thousand, nine hundred fifty-six".