131144340321 has 12 divisors (see below), whose sum is σ = 195541382400. Its totient is φ = 84609251640.

The previous prime is 131144340307. The next prime is 131144340377. The reversal of 131144340321 is 123043441131.

131144340321 is a `hidden beast` number, since 1 + 311 + 4 + 4 + 340 + 3 + 2 + 1 = 666.

It is not a de Polignac number, because 131144340321 - 2⁵ = 131144340289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131144344321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 235025421 + ... + 235025978.

It is an arithmetic number, because the mean of its divisors is an integer number (16295115200).

Almost surely, 2^131144340321 is an apocalyptic number.

It is an amenable number.

131144340321 is a deficient number, since it is larger than the sum of its proper divisors (64397042079).

131144340321 is a wasteful number, since it uses less digits than its factorization.

131144340321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470051436 (or 470051433 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 131144340321 its reverse (123043441131), we get a palindrome (254187781452).

The spelling of 131144340321 in words is "one hundred thirty-one billion, one hundred forty-four million, three hundred forty thousand, three hundred twenty-one".