131345214641 has 4 divisors (see below), whose sum is σ = 133823426292. Its totient is φ = 128867002992.

The previous prime is 131345214607. The next prime is 131345214667. The reversal of 131345214641 is 146412543131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 146412543131 = 131 ⋅1117653001.

It can be written as a sum of positive squares in 2 ways, for example, as 84290928241 + 47054286400 = 290329^2 + 216920^2 .

It is a cyclic number.

It is not a de Polignac number, because 131345214641 - 2⁶ = 131345214577 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131345214041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1239105746 + ... + 1239105851.

It is an arithmetic number, because the mean of its divisors is an integer number (33455856573).

Almost surely, 2^131345214641 is an apocalyptic number.

It is an amenable number.

131345214641 is a deficient number, since it is larger than the sum of its proper divisors (2478211651).

131345214641 is an equidigital number, since it uses as much as digits as its factorization.

131345214641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2478211650.

The product of its digits is 34560, while the sum is 35.

Adding to 131345214641 its reverse (146412543131), we get a palindrome (277757757772).

The spelling of 131345214641 in words is "one hundred thirty-one billion, three hundred forty-five million, two hundred fourteen thousand, six hundred forty-one".