131475131 has 4 divisors (see below), whose sum is σ = 131500512. Its totient is φ = 131449752.

The previous prime is 131475119. The next prime is 131475133. The reversal of 131475131 is 131574131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131475131 is a prime.

It is a super-2 number, since 2×131475131² = 34571420142934322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131475131.

It is not an unprimeable number, because it can be changed into a prime (131475133) 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, 1811 + ... + 16316.

It is an arithmetic number, because the mean of its divisors is an integer number (32875128).

Almost surely, 2^131475131 is an apocalyptic number.

131475131 is a deficient number, since it is larger than the sum of its proper divisors (25381).

131475131 is an equidigital number, since it uses as much as digits as its factorization.

131475131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25380.

The product of its digits is 1260, while the sum is 26.

The square root of 131475131 is about 11466.2605499788. The cubic root of 131475131 is about 508.4885804658.

The spelling of 131475131 in words is "one hundred thirty-one million, four hundred seventy-five thousand, one hundred thirty-one".