131450355217 has 2 divisors, whose sum is σ = 131450355218. Its totient is φ = 131450355216.

The previous prime is 131450355199. The next prime is 131450355227. The reversal of 131450355217 is 712553054131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97463220481 + 33987134736 = 312191^2 + 184356^2 .

It is a cyclic number.

It is not a de Polignac number, because 131450355217 - 2¹¹ = 131450353169 is a prime.

It is not a weakly prime, because it can be changed into another prime (131450355227) 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 as a sum of consecutive naturals, namely, 65725177608 + 65725177609.

It is an arithmetic number, because the mean of its divisors is an integer number (65725177609).

Almost surely, 2^131450355217 is an apocalyptic number.

It is an amenable number.

131450355217 is a deficient number, since it is larger than the sum of its proper divisors (1).

131450355217 is an equidigital number, since it uses as much as digits as its factorization.

131450355217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63000, while the sum is 37.

The spelling of 131450355217 in words is "one hundred thirty-one billion, four hundred fifty million, three hundred fifty-five thousand, two hundred seventeen".