306813130 has 16 divisors (see below), whose sum is σ = 594745704. Its totient is φ = 113284800.

The previous prime is 306813109. The next prime is 306813151. The reversal of 306813130 is 31318603.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (306813109) and next prime (306813151).

It can be written as a sum of positive squares in 4 ways, for example, as 194686209 + 112126921 = 13953^2 + 10589^2 .

It is a junction number, because it is equal to n+sod(n) for n = 306813095 and 306813104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1179921 + ... + 1180180.

Almost surely, 2^306813130 is an apocalyptic number.

306813130 is a deficient number, since it is larger than the sum of its proper divisors (287932574).

306813130 is a wasteful number, since it uses less digits than its factorization.

306813130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360121.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 306813130 is about 17516.0820390863. The cubic root of 306813130 is about 674.4627677752.

The spelling of 306813130 in words is "three hundred six million, eight hundred thirteen thousand, one hundred thirty".