305212 has 6 divisors (see below), whose sum is σ = 534128. Its totient is φ = 152604.

The previous prime is 305209. The next prime is 305219. The reversal of 305212 is 212503.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 305192 and 305201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38148 + ... + 38155.

2³⁰⁵²¹² is an apocalyptic number.

It is an amenable number.

305212 is a deficient number, since it is larger than the sum of its proper divisors (228916).

305212 is a wasteful number, since it uses less digits than its factorization.

305212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76307 (or 76305 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 305212 is about 552.4599532998. The cubic root of 305212 is about 67.3287474139.

Adding to 305212 its reverse (212503), we get a palindrome (517715).

The spelling of 305212 in words is "three hundred five thousand, two hundred twelve".