131389632197 has 2 divisors, whose sum is σ = 131389632198. Its totient is φ = 131389632196.

The previous prime is 131389632193. The next prime is 131389632293. The reversal of 131389632197 is 791236983131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122798381476 + 8591250721 = 350426^2 + 92689^2 .

It is a cyclic number.

It is not a de Polignac number, because 131389632197 - 2² = 131389632193 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131389632193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65694816098 + 65694816099.

It is an arithmetic number, because the mean of its divisors is an integer number (65694816099).

Almost surely, 2^131389632197 is an apocalyptic number.

It is an amenable number.

131389632197 is a deficient number, since it is larger than the sum of its proper divisors (1).

131389632197 is an equidigital number, since it uses as much as digits as its factorization.

131389632197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 53.

The spelling of 131389632197 in words is "one hundred thirty-one billion, three hundred eighty-nine million, six hundred thirty-two thousand, one hundred ninety-seven".