195313 has 4 divisors (see below), whose sum is σ = 206820. Its totient is φ = 183808.

The previous prime is 195311. The next prime is 195319. The reversal of 195313 is 313591.

195313 = 312² + 313².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313591 = 557 ⋅563.

It can be written as a sum of positive squares in 2 ways, for example, as 97969 + 97344 = 313^2 + 312^2 .

It is a cyclic number.

It is not a de Polignac number, because 195313 - 2¹ = 195311 is a prime.

It is a Duffinian number.

It is a plaindrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5728 + ... + 5761.

It is an arithmetic number, because the mean of its divisors is an integer number (51705).

2¹⁹⁵³¹³ is an apocalyptic number.

195313 is the 313-rd centered square number.

It is an amenable number.

195313 is a deficient number, since it is larger than the sum of its proper divisors (11507).

195313 is a wasteful number, since it uses less digits than its factorization.

195313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11506.

The product of its digits is 405, while the sum is 22.

The square root of 195313 is about 441.9423039267. The cubic root of 195313 is about 58.0199099304.

The spelling of 195313 in words is "one hundred ninety-five thousand, three hundred thirteen".