3147309 has 16 divisors (see below), whose sum is σ = 5087040. Its totient is φ = 1907280.

The previous prime is 3147269. The next prime is 3147311. The reversal of 3147309 is 9037413.

It is not a de Polignac number, because 3147309 - 2⁷ = 3147181 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3147349) 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, 5002 + ... + 5595.

It is an arithmetic number, because the mean of its divisors is an integer number (317940).

Almost surely, 2^3147309 is an apocalyptic number.

It is an amenable number.

3147309 is a deficient number, since it is larger than the sum of its proper divisors (1939731).

3147309 is a wasteful number, since it uses less digits than its factorization.

3147309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10617 (or 10611 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 3147309 is about 1774.0656695850. The cubic root of 3147309 is about 146.5479658272.

The spelling of 3147309 in words is "three million, one hundred forty-seven thousand, three hundred nine".