195533231 has 2 divisors, whose sum is σ = 195533232. Its totient is φ = 195533230.

The previous prime is 195533227. The next prime is 195533249. The reversal of 195533231 is 132335591.

It is a weak prime.

It is an emirp because it is prime and its reverse (132335591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195533231 - 2² = 195533227 is a prime.

It is a super-2 number, since 2×195533231² = 76466488850598722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195533251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97766615 + 97766616.

It is an arithmetic number, because the mean of its divisors is an integer number (97766616).

Almost surely, 2^195533231 is an apocalyptic number.

195533231 is a deficient number, since it is larger than the sum of its proper divisors (1).

195533231 is an equidigital number, since it uses as much as digits as its factorization.

195533231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12150, while the sum is 32.

The square root of 195533231 is about 13983.3197417495. The cubic root of 195533231 is about 580.4170909914.

The spelling of 195533231 in words is "one hundred ninety-five million, five hundred thirty-three thousand, two hundred thirty-one".