131205195954 has 48 divisors (see below), whose sum is σ = 336921993408. Its totient is φ = 37487197872.

The previous prime is 131205195943. The next prime is 131205195991. The reversal of 131205195954 is 459591502131.

131205195954 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 0 + 51 + 9 + 595 + 4 = 666.

131205195954 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 19280137 + ... + 19286940.

It is an arithmetic number, because the mean of its divisors is an integer number (7019208196).

Almost surely, 2^131205195954 is an apocalyptic number.

131205195954 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

131205195954 is an abundant number, since it is smaller than the sum of its proper divisors (205716797454).

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

131205195954 is an equidigital number, since it uses as much as digits as its factorization.

131205195954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38567101 (or 38567089 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 45.

The spelling of 131205195954 in words is "one hundred thirty-one billion, two hundred five million, one hundred ninety-five thousand, nine hundred fifty-four".