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3197 = 23139

3197 has 4 divisors (see below), whose sum is σ = 3360. Its totient is φ = 3036.

The previous prime is 3191. The next prime is 3203. The reversal of 3197 is 7913.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7913 = 41193.

It is an interprime number because it is at equal distance from previous prime (3191) and next prime (3203).

It is not a de Polignac number, because 3197 - 24 = 3181 is a prime.

It is a Duffinian number.

It is a plaindrome in base 6, base 11, base 13 and base 14.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3191) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47 + ... + 92.

It is an arithmetic number, because the mean of its divisors is an integer number (840).

23197 is an apocalyptic number.

It is an amenable number.

3197 is a deficient number, since it is larger than the sum of its proper divisors (163).

3197 is a wasteful number, since it uses less digits than its factorization.

3197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162.

The product of its digits is 189, while the sum is 20.

The square root of 3197 is about 56.5420197729. The cubic root of 3197 is about 14.7315195154.

It can be divided in two parts, 31 and 97, that added together give a 7-th power (128 = 27).

The spelling of 3197 in words is "three thousand, one hundred ninety-seven".

Divisors: 1 23 139 3197