131532291 has 24 divisors (see below), whose sum is σ = 209415024. Its totient is φ = 78888960.

The previous prime is 131532263. The next prime is 131532293. The reversal of 131532291 is 192235131.

It is not a de Polignac number, because 131532291 - 2⁵ = 131532259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131532293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2755 + ... + 16451.

It is an arithmetic number, because the mean of its divisors is an integer number (8725626).

Almost surely, 2^131532291 is an apocalyptic number.

131532291 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131532291 is a deficient number, since it is larger than the sum of its proper divisors (77882733).

131532291 is a wasteful number, since it uses less digits than its factorization.

131532291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13811 (or 13808 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 131532291 is about 11468.7528092640. The cubic root of 131532291 is about 508.5622597894.

The spelling of 131532291 in words is "one hundred thirty-one million, five hundred thirty-two thousand, two hundred ninety-one".