305080513 has 2 divisors, whose sum is σ = 305080514. Its totient is φ = 305080512.

The previous prime is 305080507. The next prime is 305080591. The reversal of 305080513 is 315080503.

It is a happy number.

305080513 is nontrivially palindromic in base 9.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163660849 + 141419664 = 12793^2 + 11892^2 .

It is an emirp because it is prime and its reverse (315080503) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 305080513 - 2⁵ = 305080481 is a prime.

It is not a weakly prime, because it can be changed into another prime (305080613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152540256 + 152540257.

It is an arithmetic number, because the mean of its divisors is an integer number (152540257).

Almost surely, 2^305080513 is an apocalyptic number.

It is an amenable number.

305080513 is a deficient number, since it is larger than the sum of its proper divisors (1).

305080513 is an equidigital number, since it uses as much as digits as its factorization.

305080513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 305080513 is about 17466.5541249555. The cubic root of 305080513 is about 673.1907749422.

The spelling of 305080513 in words is "three hundred five million, eighty thousand, five hundred thirteen".