305023212 has 48 divisors (see below), whose sum is σ = 851635680. Its totient is φ = 93852864.

The previous prime is 305023181. The next prime is 305023219. The reversal of 305023212 is 212320503.

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 (305023219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107223 + ... + 110030.

It is an arithmetic number, because the mean of its divisors is an integer number (17742410).

Almost surely, 2^305023212 is an apocalyptic number.

It is an amenable number.

305023212 is an abundant number, since it is smaller than the sum of its proper divisors (546612468).

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

305023212 is a wasteful number, since it uses less digits than its factorization.

305023212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217279 (or 217271 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 305023212 is about 17464.9137415562. The cubic root of 305023212 is about 673.1486255005.

Adding to 305023212 its reverse (212320503), we get a palindrome (517343715).

It can be divided in two parts, 3050 and 23212, that added together give a palindrome (26262).

The spelling of 305023212 in words is "three hundred five million, twenty-three thousand, two hundred twelve".