131570197 has 6 divisors (see below), whose sum is σ = 144618614. Its totient is φ = 119609160.

The previous prime is 131570161. The next prime is 131570203. The reversal of 131570197 is 791075131.

It can be written as a sum of positive squares in only one way, i.e., 110124036 + 21446161 = 10494^2 + 4631^2 .

It is not a de Polignac number, because 131570197 - 2¹¹ = 131568149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131570137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 543558 + ... + 543799.

Almost surely, 2^131570197 is an apocalyptic number.

It is an amenable number.

131570197 is a deficient number, since it is larger than the sum of its proper divisors (13048417).

131570197 is a wasteful number, since it uses less digits than its factorization.

131570197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087379 (or 1087368 counting only the distinct ones).

The product of its (nonzero) digits is 6615, while the sum is 34.

The square root of 131570197 is about 11470.4052674698. The cubic root of 131570197 is about 508.6111089080.

The spelling of 131570197 in words is "one hundred thirty-one million, five hundred seventy thousand, one hundred ninety-seven".