305513012 has 24 divisors (see below), whose sum is σ = 612507840. Its totient is φ = 130616640.

The previous prime is 305513011. The next prime is 305513077. The reversal of 305513012 is 210315503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305513011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1289 + ... + 24752.

It is an arithmetic number, because the mean of its divisors is an integer number (25521160).

Almost surely, 2^305513012 is an apocalyptic number.

It is an amenable number.

305513012 is an abundant number, since it is smaller than the sum of its proper divisors (306994828).

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

305513012 is a wasteful number, since it uses less digits than its factorization.

305513012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26471 (or 26469 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 305513012 is about 17478.9305164818. The cubic root of 305513012 is about 673.5087422190.

Adding to 305513012 its reverse (210315503), we get a palindrome (515828515).

The spelling of 305513012 in words is "three hundred five million, five hundred thirteen thousand, twelve".