131043245305 has 12 divisors (see below), whose sum is σ = 182925673380. Its totient is φ = 89858225184.

The previous prime is 131043245293. The next prime is 131043245357. The reversal of 131043245305 is 503542340131.

It can be written as a sum of positive squares in 2 ways, for example, as 38561569641 + 92481675664 = 196371^2 + 304108^2 .

It is not a de Polignac number, because 131043245305 - 2⁵ = 131043245273 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 267434950 + ... + 267435439.

It is an arithmetic number, because the mean of its divisors is an integer number (15243806115).

Almost surely, 2^131043245305 is an apocalyptic number.

It is an amenable number.

131043245305 is a deficient number, since it is larger than the sum of its proper divisors (51882428075).

131043245305 is an equidigital number, since it uses as much as digits as its factorization.

131043245305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534870408 (or 534870401 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 131043245305 its reverse (503542340131), we get a palindrome (634585585436).

The spelling of 131043245305 in words is "one hundred thirty-one billion, forty-three million, two hundred forty-five thousand, three hundred five".