309255230 has 8 divisors (see below), whose sum is σ = 556659432. Its totient is φ = 123702088.

The previous prime is 309255223. The next prime is 309255239. The reversal of 309255230 is 32552903.

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

It is a junction number, because it is equal to n+sod(n) for n = 309255193 and 309255202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309255239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15462752 + ... + 15462771.

It is an arithmetic number, because the mean of its divisors is an integer number (69582429).

Almost surely, 2^309255230 is an apocalyptic number.

309255230 is a deficient number, since it is larger than the sum of its proper divisors (247404202).

309255230 is a wasteful number, since it uses less digits than its factorization.

309255230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30925530.

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 309255230 is about 17585.6540964503. The cubic root of 309255230 is about 676.2475182787.

The spelling of 309255230 in words is "three hundred nine million, two hundred fifty-five thousand, two hundred thirty".