131750831 has 4 divisors (see below), whose sum is σ = 137479152. Its totient is φ = 126022512.

The previous prime is 131750813. The next prime is 131750869. The reversal of 131750831 is 138057131.

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-131750831 is a prime.

It is a super-2 number, since 2×131750831² = 34716562938381122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131750794 and 131750803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131750131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2864126 + ... + 2864171.

It is an arithmetic number, because the mean of its divisors is an integer number (34369788).

Almost surely, 2^131750831 is an apocalyptic number.

131750831 is a deficient number, since it is larger than the sum of its proper divisors (5728321).

131750831 is an equidigital number, since it uses as much as digits as its factorization.

131750831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5728320.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 131750831 is about 11478.2764821205. The cubic root of 131750831 is about 508.8437615122.

The spelling of 131750831 in words is "one hundred thirty-one million, seven hundred fifty thousand, eight hundred thirty-one".