309214 has 8 divisors (see below), whose sum is σ = 466200. Its totient is φ = 153816.

The previous prime is 309193. The next prime is 309223. The reversal of 309214 is 412903.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×309214² = 191226595592, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 309191 and 309200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477 + ... + 919.

It is an arithmetic number, because the mean of its divisors is an integer number (58275).

2³⁰⁹²¹⁴ is an apocalyptic number.

309214 is a deficient number, since it is larger than the sum of its proper divisors (156986).

309214 is a wasteful number, since it uses less digits than its factorization.

309214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 309214 is about 556.0701394608. The cubic root of 309214 is about 67.6217464436.

The spelling of 309214 in words is "three hundred nine thousand, two hundred fourteen".