306222130 has 16 divisors (see below), whose sum is σ = 551418840. Its totient is φ = 122440192.

The previous prime is 306222097. The next prime is 306222149. The reversal of 306222130 is 31222603.

It can be written as a sum of positive squares in 4 ways, for example, as 143736121 + 162486009 = 11989^2 + 12747^2 .

It is a junction number, because it is equal to n+sod(n) for n = 306222098 and 306222107.

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, 31266 + ... + 39874.

Almost surely, 2^306222130 is an apocalyptic number.

306222130 is a deficient number, since it is larger than the sum of its proper divisors (245196710).

306222130 is a wasteful number, since it uses less digits than its factorization.

306222130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12173.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 306222130 is about 17499.2036961686. The cubic root of 306222130 is about 674.0294272271.

Adding to 306222130 its reverse (31222603), we get a palindrome (337444733).

The spelling of 306222130 in words is "three hundred six million, two hundred twenty-two thousand, one hundred thirty".