131941193409 has 8 divisors (see below), whose sum is σ = 195468434720. Its totient is φ = 87960795588.

The previous prime is 131941193401. The next prime is 131941193411. The reversal of 131941193409 is 904391149131.

131941193409 is a `hidden beast` number, since 1 + 3 + 19 + 41 + 193 + 409 = 666.

It is not a de Polignac number, because 131941193409 - 2³ = 131941193401 is a prime.

It is a super-2 number, since 2×131941193409² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131941193401) 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, 2443355407 + ... + 2443355460.

It is an arithmetic number, because the mean of its divisors is an integer number (24433554340).

Almost surely, 2^131941193409 is an apocalyptic number.

It is an amenable number.

131941193409 is a deficient number, since it is larger than the sum of its proper divisors (63527241311).

131941193409 is an equidigital number, since it uses as much as digits as its factorization.

131941193409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4886710876 (or 4886710870 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The spelling of 131941193409 in words is "one hundred thirty-one billion, nine hundred forty-one million, one hundred ninety-three thousand, four hundred nine".