131601156 has 96 divisors (see below), whose sum is σ = 330895488. Its totient is φ = 40642560.

The previous prime is 131601139. The next prime is 131601167. The reversal of 131601156 is 651106131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1164556 + ... + 1164668.

It is an arithmetic number, because the mean of its divisors is an integer number (3446828).

Almost surely, 2^131601156 is an apocalyptic number.

It is an amenable number.

131601156 is an abundant number, since it is smaller than the sum of its proper divisors (199294332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131601156 is a wasteful number, since it uses less digits than its factorization.

131601156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 131601156 is about 11471.7547044905. The cubic root of 131601156 is about 508.6509985305.

Adding to 131601156 its reverse (651106131), we get a palindrome (782707287).

The spelling of 131601156 in words is "one hundred thirty-one million, six hundred one thousand, one hundred fifty-six".