131855233 has 2 divisors, whose sum is σ = 131855234. Its totient is φ = 131855232.

The previous prime is 131855209. The next prime is 131855287. The reversal of 131855233 is 332558131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117657409 + 14197824 = 10847^2 + 3768^2 .

It is a cyclic number.

It is not a de Polignac number, because 131855233 - 2⁹ = 131854721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131855195 and 131855204.

It is not a weakly prime, because it can be changed into another prime (131855033) 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 as a sum of consecutive naturals, namely, 65927616 + 65927617.

It is an arithmetic number, because the mean of its divisors is an integer number (65927617).

Almost surely, 2^131855233 is an apocalyptic number.

It is an amenable number.

131855233 is a deficient number, since it is larger than the sum of its proper divisors (1).

131855233 is an equidigital number, since it uses as much as digits as its factorization.

131855233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 31.

The square root of 131855233 is about 11482.8233897417. The cubic root of 131855233 is about 508.9781320254.

The spelling of 131855233 in words is "one hundred thirty-one million, eight hundred fifty-five thousand, two hundred thirty-three".