131892197 has 4 divisors (see below), whose sum is σ = 136146816. Its totient is φ = 127637580.

The previous prime is 131892193. The next prime is 131892209. The reversal of 131892197 is 791298131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 791298131 = 13 ⋅60869087.

It is a cyclic number.

It is not a de Polignac number, because 131892197 - 2² = 131892193 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 (131892191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2127263 + ... + 2127324.

It is an arithmetic number, because the mean of its divisors is an integer number (34036704).

Almost surely, 2^131892197 is an apocalyptic number.

It is an amenable number.

131892197 is a deficient number, since it is larger than the sum of its proper divisors (4254619).

131892197 is an equidigital number, since it uses as much as digits as its factorization.

131892197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4254618.

The product of its digits is 27216, while the sum is 41.

The square root of 131892197 is about 11484.4328114191. The cubic root of 131892197 is about 509.0256895105.

The spelling of 131892197 in words is "one hundred thirty-one million, eight hundred ninety-two thousand, one hundred ninety-seven".