305136214 has 8 divisors (see below), whose sum is σ = 459334008. Its totient is φ = 152024880.

The previous prime is 305136197. The next prime is 305136229. The reversal of 305136214 is 412631503.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270912 + ... + 272035.

It is an arithmetic number, because the mean of its divisors is an integer number (57416751).

Almost surely, 2^305136214 is an apocalyptic number.

305136214 is a deficient number, since it is larger than the sum of its proper divisors (154197794).

305136214 is a wasteful number, since it uses less digits than its factorization.

305136214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543230.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 305136214 is about 17468.1485567303. The cubic root of 305136214 is about 673.2317423982.

Adding to 305136214 its reverse (412631503), we get a palindrome (717767717).

The spelling of 305136214 in words is "three hundred five million, one hundred thirty-six thousand, two hundred fourteen".