195131353 has 2 divisors, whose sum is σ = 195131354. Its totient is φ = 195131352.

The previous prime is 195131351. The next prime is 195131383. The reversal of 195131353 is 353131591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193849929 + 1281424 = 13923^2 + 1132^2 .

It is a cyclic number.

It is not a de Polignac number, because 195131353 - 2¹ = 195131351 is a prime.

It is a super-2 number, since 2×195131353² = 76152489847221218, which contains 22 as substring.

Together with 195131351, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (195131351) 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, 97565676 + 97565677.

It is an arithmetic number, because the mean of its divisors is an integer number (97565677).

Almost surely, 2^195131353 is an apocalyptic number.

It is an amenable number.

195131353 is a deficient number, since it is larger than the sum of its proper divisors (1).

195131353 is an equidigital number, since it uses as much as digits as its factorization.

195131353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6075, while the sum is 31.

The square root of 195131353 is about 13968.9424438645. The cubic root of 195131353 is about 580.0191759415.

The spelling of 195131353 in words is "one hundred ninety-five million, one hundred thirty-one thousand, three hundred fifty-three".