304123212 has 36 divisors (see below), whose sum is σ = 770709576. Its totient is φ = 101116800.

The previous prime is 304123207. The next prime is 304123213. The reversal of 304123212 is 212321403.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (304123213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3903 + ... + 24969.

Almost surely, 2^304123212 is an apocalyptic number.

It is an amenable number.

304123212 is an abundant number, since it is smaller than the sum of its proper divisors (466586364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

304123212 is a wasteful number, since it uses less digits than its factorization.

304123212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21478 (or 21473 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 304123212 is about 17439.1287626418. The cubic root of 304123212 is about 672.4859102551.

Adding to 304123212 its reverse (212321403), we get a palindrome (516444615).

The spelling of 304123212 in words is "three hundred four million, one hundred twenty-three thousand, two hundred twelve".