195937331 has 2 divisors, whose sum is σ = 195937332. Its totient is φ = 195937330.

The previous prime is 195937321. The next prime is 195937333. The reversal of 195937331 is 133739591.

It is a strong prime.

It is an emirp because it is prime and its reverse (133739591) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195937331 is a prime.

It is a super-2 number, since 2×195937331² = 76782875358807122, which contains 22 as substring.

Together with 195937333, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (195937333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97968665 + 97968666.

It is an arithmetic number, because the mean of its divisors is an integer number (97968666).

Almost surely, 2^195937331 is an apocalyptic number.

195937331 is a deficient number, since it is larger than the sum of its proper divisors (1).

195937331 is an equidigital number, since it uses as much as digits as its factorization.

195937331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 76545, while the sum is 41.

The square root of 195937331 is about 13997.7616424913. The cubic root of 195937331 is about 580.8166567580.

The spelling of 195937331 in words is "one hundred ninety-five million, nine hundred thirty-seven thousand, three hundred thirty-one".