131601771 has 24 divisors (see below), whose sum is σ = 228683520. Its totient is φ = 71242416.

The previous prime is 131601763. The next prime is 131601773. The reversal of 131601771 is 177106131.

It is not a de Polignac number, because 131601771 - 2³ = 131601763 is a prime.

It is a super-2 number, since 2×131601771² = 34638052260672882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131601773) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53775 + ... + 56168.

It is an arithmetic number, because the mean of its divisors is an integer number (9528480).

Almost surely, 2^131601771 is an apocalyptic number.

131601771 is a deficient number, since it is larger than the sum of its proper divisors (97081749).

131601771 is a wasteful number, since it uses less digits than its factorization.

131601771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109975 (or 109972 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 27.

The square root of 131601771 is about 11471.7815094256. The cubic root of 131601771 is about 508.6517908738.

The spelling of 131601771 in words is "one hundred thirty-one million, six hundred one thousand, seven hundred seventy-one".