232012309 has 8 divisors (see below), whose sum is σ = 236476800. Its totient is φ = 227581200.

The previous prime is 232012289. The next prime is 232012331. The reversal of 232012309 is 903210232.

232012309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 232012309 - 2⁹ = 232011797 is a prime.

It is a super-2 number, since 2×232012309² = 107659423055022962, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 232012309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232012349) 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, 5919 + ... + 22339.

It is an arithmetic number, because the mean of its divisors is an integer number (29559600).

Almost surely, 2^232012309 is an apocalyptic number.

It is an amenable number.

232012309 is a deficient number, since it is larger than the sum of its proper divisors (4464491).

232012309 is a wasteful number, since it uses less digits than its factorization.

232012309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16691.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 232012309 is about 15231.9502690890. The cubic root of 232012309 is about 614.4742319415.

The spelling of 232012309 in words is "two hundred thirty-two million, twelve thousand, three hundred nine".