131290645273 has 2 divisors, whose sum is σ = 131290645274. Its totient is φ = 131290645272.

The previous prime is 131290645267. The next prime is 131290645307. The reversal of 131290645273 is 372546092131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124357085449 + 6933559824 = 352643^2 + 83268^2 .

It is a cyclic number.

It is not a de Polignac number, because 131290645273 - 2⁹ = 131290644761 is a prime.

It is not a weakly prime, because it can be changed into another prime (131290645253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65645322636 + 65645322637.

It is an arithmetic number, because the mean of its divisors is an integer number (65645322637).

Almost surely, 2^131290645273 is an apocalyptic number.

It is an amenable number.

131290645273 is a deficient number, since it is larger than the sum of its proper divisors (1).

131290645273 is an equidigital number, since it uses as much as digits as its factorization.

131290645273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 131290645273 in words is "one hundred thirty-one billion, two hundred ninety million, six hundred forty-five thousand, two hundred seventy-three".