305051013 has 12 divisors (see below), whose sum is σ = 446666220. Its totient is φ = 200581056.

The previous prime is 305051011. The next prime is 305051017. The reversal of 305051013 is 310150503.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 81757764 + 223293249 = 9042^2 + 14943^2 .

It is not a de Polignac number, because 305051013 - 2¹ = 305051011 is a prime.

It is a super-2 number, since 2×305051013² = 186112241064652338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305051011) 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, 231498 + ... + 232811.

It is an arithmetic number, because the mean of its divisors is an integer number (37222185).

Almost surely, 2^305051013 is an apocalyptic number.

It is an amenable number.

305051013 is a deficient number, since it is larger than the sum of its proper divisors (141615207).

305051013 is a wasteful number, since it uses less digits than its factorization.

305051013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464388 (or 464385 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 18.

The square root of 305051013 is about 17465.7096334503. The cubic root of 305051013 is about 673.1690760058.

The spelling of 305051013 in words is "three hundred five million, fifty-one thousand, thirteen".