304307121730 has 16 divisors (see below), whose sum is σ = 549017844984. Its totient is φ = 121441731840.

The previous prime is 304307121697. The next prime is 304307121733. The reversal of 304307121730 is 37121703403.

It can be written as a sum of positive squares in 4 ways, for example, as 81937345009 + 222369776721 = 286247^2 + 471561^2 .

It is a junction number, because it is equal to n+sod(n) for n = 304307121692 and 304307121701.

It is not an unprimeable number, because it can be changed into a prime (304307121733) 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, 35135061 + ... + 35143720.

Almost surely, 2^304307121730 is an apocalyptic number.

304307121730 is a deficient number, since it is larger than the sum of its proper divisors (244710723254).

304307121730 is a wasteful number, since it uses less digits than its factorization.

304307121730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70279221.

The product of its (nonzero) digits is 10584, while the sum is 31.

The spelling of 304307121730 in words is "three hundred four billion, three hundred seven million, one hundred twenty-one thousand, seven hundred thirty".