195331237 has 8 divisors (see below), whose sum is σ = 197887320. Its totient is φ = 192783360.

The previous prime is 195331231. The next prime is 195331291. The reversal of 195331237 is 732133591.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9036036 + 186295201 = 3006^2 + 13649^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 195331237 - 2²⁷ = 61113509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195331231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56437 + ... + 59797.

It is an arithmetic number, because the mean of its divisors is an integer number (24735915).

Almost surely, 2^195331237 is an apocalyptic number.

It is an amenable number.

195331237 is a deficient number, since it is larger than the sum of its proper divisors (2556083).

195331237 is an equidigital number, since it uses as much as digits as its factorization.

195331237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4103.

The product of its digits is 17010, while the sum is 34.

The square root of 195331237 is about 13976.0951985882. The cubic root of 195331237 is about 580.2171570910.

The spelling of 195331237 in words is "one hundred ninety-five million, three hundred thirty-one thousand, two hundred thirty-seven".