131200232197 has 2 divisors, whose sum is σ = 131200232198. Its totient is φ = 131200232196.

The previous prime is 131200232167. The next prime is 131200232209. The reversal of 131200232197 is 791232002131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76512538881 + 54687693316 = 276609^2 + 233854^2 .

It is a cyclic number.

It is not a de Polignac number, because 131200232197 - 2³¹ = 129052748549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131200232167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65600116098 + 65600116099.

It is an arithmetic number, because the mean of its divisors is an integer number (65600116099).

Almost surely, 2^131200232197 is an apocalyptic number.

It is an amenable number.

131200232197 is a deficient number, since it is larger than the sum of its proper divisors (1).

131200232197 is an equidigital number, since it uses as much as digits as its factorization.

131200232197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The spelling of 131200232197 in words is "one hundred thirty-one billion, two hundred million, two hundred thirty-two thousand, one hundred ninety-seven".