305031224 has 8 divisors (see below), whose sum is σ = 571933560. Its totient is φ = 152515608.

The previous prime is 305031217. The next prime is 305031229. The reversal of 305031224 is 422130503.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×305031224² = 186088095229876352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 305031196 and 305031205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305031229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19064444 + ... + 19064459.

It is an arithmetic number, because the mean of its divisors is an integer number (71491695).

Almost surely, 2^305031224 is an apocalyptic number.

It is an amenable number.

305031224 is a deficient number, since it is larger than the sum of its proper divisors (266902336).

305031224 is a wasteful number, since it uses less digits than its factorization.

305031224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38128909 (or 38128905 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 305031224 is about 17465.1431142147. The cubic root of 305031224 is about 673.1545192810.

Adding to 305031224 its reverse (422130503), we get a palindrome (727161727).

The spelling of 305031224 in words is "three hundred five million, thirty-one thousand, two hundred twenty-four".