131897177 has 4 divisors (see below), whose sum is σ = 132162000. Its totient is φ = 131632356.

The previous prime is 131897167. The next prime is 131897179. The reversal of 131897177 is 771798131.

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.

It is a cyclic number.

It is not a de Polignac number, because 131897177 - 2¹⁸ = 131635033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131897179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131663 + ... + 132660.

It is an arithmetic number, because the mean of its divisors is an integer number (33040500).

Almost surely, 2^131897177 is an apocalyptic number.

It is an amenable number.

131897177 is a deficient number, since it is larger than the sum of its proper divisors (264823).

131897177 is an equidigital number, since it uses as much as digits as its factorization.

131897177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264822.

The product of its digits is 74088, while the sum is 44.

The square root of 131897177 is about 11484.6496246076. The cubic root of 131897177 is about 509.0320960458.

The spelling of 131897177 in words is "one hundred thirty-one million, eight hundred ninety-seven thousand, one hundred seventy-seven".