131373065261 has 2 divisors, whose sum is σ = 131373065262. Its totient is φ = 131373065260.

The previous prime is 131373065249. The next prime is 131373065309. The reversal of 131373065261 is 162560373131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71345615236 + 60027450025 = 267106^2 + 245005^2 .

It is a cyclic number.

It is not a de Polignac number, because 131373065261 - 2¹⁰ = 131373064237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131333065261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65686532630 + 65686532631.

It is an arithmetic number, because the mean of its divisors is an integer number (65686532631).

Almost surely, 2^131373065261 is an apocalyptic number.

It is an amenable number.

131373065261 is a deficient number, since it is larger than the sum of its proper divisors (1).

131373065261 is an equidigital number, since it uses as much as digits as its factorization.

131373065261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 38.

The spelling of 131373065261 in words is "one hundred thirty-one billion, three hundred seventy-three million, sixty-five thousand, two hundred sixty-one".