195313971 has 16 divisors (see below), whose sum is σ = 267079680. Its totient is φ = 126920640.

The previous prime is 195313967. The next prime is 195313973. The reversal of 195313971 is 179313591.

It is not a de Polignac number, because 195313971 - 2² = 195313967 is a prime.

It is not an unprimeable number, because it can be changed into a prime (195313973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13806 + ... + 24108.

It is an arithmetic number, because the mean of its divisors is an integer number (16692480).

Almost surely, 2^195313971 is an apocalyptic number.

195313971 is a deficient number, since it is larger than the sum of its proper divisors (71765709).

195313971 is a wasteful number, since it uses less digits than its factorization.

195313971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10466.

The product of its digits is 25515, while the sum is 39.

The square root of 195313971 is about 13975.4774873705. The cubic root of 195313971 is about 580.2000607904.

The spelling of 195313971 in words is "one hundred ninety-five million, three hundred thirteen thousand, nine hundred seventy-one".