195012313 has 4 divisors (see below), whose sum is σ = 195514020. Its totient is φ = 194510608.

The previous prime is 195012283. The next prime is 195012317. The reversal of 195012313 is 313210591.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 83667609 + 111344704 = 9147^2 + 10552^2 .

It is a cyclic number.

It is not a de Polignac number, because 195012313 - 2²¹ = 192915161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195012317) 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, 250270 + ... + 251047.

It is an arithmetic number, because the mean of its divisors is an integer number (48878505).

Almost surely, 2^195012313 is an apocalyptic number.

It is an amenable number.

195012313 is a deficient number, since it is larger than the sum of its proper divisors (501707).

195012313 is an equidigital number, since it uses as much as digits as its factorization.

195012313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501706.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 195012313 is about 13964.6809129317. The cubic root of 195012313 is about 579.9012049324.

The spelling of 195012313 in words is "one hundred ninety-five million, twelve thousand, three hundred thirteen".