131875231 has 2 divisors, whose sum is σ = 131875232. Its totient is φ = 131875230.

The previous prime is 131875223. The next prime is 131875319. The reversal of 131875231 is 132578131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131875231 - 2³ = 131875223 is a prime.

It is a super-2 number, since 2×131875231² = 34782153102606722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131875193 and 131875202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131875531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65937615 + 65937616.

It is an arithmetic number, because the mean of its divisors is an integer number (65937616).

Almost surely, 2^131875231 is an apocalyptic number.

131875231 is a deficient number, since it is larger than the sum of its proper divisors (1).

131875231 is an equidigital number, since it uses as much as digits as its factorization.

131875231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 31.

The square root of 131875231 is about 11483.6941355994. The cubic root of 131875231 is about 509.0038623406.

The spelling of 131875231 in words is "one hundred thirty-one million, eight hundred seventy-five thousand, two hundred thirty-one".