2012309 has 8 divisors (see below), whose sum is σ = 2281440. Its totient is φ = 1759536.

The previous prime is 2012299. The next prime is 2012317. The reversal of 2012309 is 9032102.

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

It is a cyclic number.

It is not a de Polignac number, because 2012309 - 2¹² = 2008213 is a prime.

It is a super-2 number, since 2×2012309² = 8098775022962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3827 + ... + 4320.

It is an arithmetic number, because the mean of its divisors is an integer number (285180).

2^2012309 is an apocalyptic number.

It is an amenable number.

2012309 is a deficient number, since it is larger than the sum of its proper divisors (269131).

2012309 is a wasteful number, since it uses less digits than its factorization.

2012309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8179.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 2012309 is about 1418.5587756593. The cubic root of 2012309 is about 126.2500493415.

The spelling of 2012309 in words is "two million, twelve thousand, three hundred nine".