305103813 has 16 divisors (see below), whose sum is σ = 477486720. Its totient is φ = 169632576.

The previous prime is 305103787. The next prime is 305103817. The reversal of 305103813 is 318301503.

It is not a de Polignac number, because 305103813 - 2¹⁴ = 305087429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305103817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195558 + ... + 197111.

It is an arithmetic number, because the mean of its divisors is an integer number (29842920).

Almost surely, 2^305103813 is an apocalyptic number.

It is an amenable number.

305103813 is a deficient number, since it is larger than the sum of its proper divisors (172382907).

305103813 is a wasteful number, since it uses less digits than its factorization.

305103813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392716.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 305103813 is about 17467.2211012513. The cubic root of 305103813 is about 673.2079124355.

The spelling of 305103813 in words is "three hundred five million, one hundred three thousand, eight hundred thirteen".