131781132167320 has 32 divisors (see below), whose sum is σ = 313949167812000. Its totient is φ = 49611720345088.

The previous prime is 131781132167299. The next prime is 131781132167327. The reversal of 131781132167320 is 23761231187131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131781132167327) 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, 96897890620 + ... + 96897891979.

It is an arithmetic number, because the mean of its divisors is an integer number (9810911494125).

Almost surely, 2^{131781132167320} is an apocalyptic number.

131781132167320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131781132167320 is an abundant number, since it is smaller than the sum of its proper divisors (182168035644680).

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

131781132167320 is a wasteful number, since it uses less digits than its factorization.

131781132167320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193795782627 (or 193795782623 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 46.

The spelling of 131781132167320 in words is "one hundred thirty-one trillion, seven hundred eighty-one billion, one hundred thirty-two million, one hundred sixty-seven thousand, three hundred twenty".