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3147 = 31049

3147 has 4 divisors (see below), whose sum is σ = 4200. Its totient is φ = 2096.

The previous prime is 3137. The next prime is 3163. The reversal of 3147 is 7413.

It can be divided in two parts, 31 and 47, that added together give a triangular number (78 = T12).

3147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 3147 - 26 = 3083 is a prime.

It is a d-powerful number, because it can be written as 36 + 42 + 1 + 74 .

It is a D-number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 3147.

It is not an unprimeable number, because it can be changed into a prime (3137) 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, 522 + ... + 527.

It is an arithmetic number, because the mean of its divisors is an integer number (1050).

3147 is a deficient number, since it is larger than the sum of its proper divisors (1053).

3147 is a wasteful number, since it uses less digits than its factorization.

3147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052.

The product of its digits is 84, while the sum is 15.

The square root of 3147 is about 56.0981283110. The cubic root of 3147 is about 14.6543169687.

The spelling of 3147 in words is "three thousand, one hundred forty-seven", and thus it is an iban number.

Divisors: 1 3 1049 3147