306420361 has 4 divisors (see below), whose sum is σ = 329991172. Its totient is φ = 282849552.

The previous prime is 306420343. The next prime is 306420377. The reversal of 306420361 is 163024603.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 163024603 = 7 ⋅23289229.

It can be written as a sum of positive squares in 2 ways, for example, as 32319225 + 274101136 = 5685^2 + 16556^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-306420361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (306420311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11785386 + ... + 11785411.

It is an arithmetic number, because the mean of its divisors is an integer number (82497793).

Almost surely, 2^306420361 is an apocalyptic number.

It is an amenable number.

306420361 is a deficient number, since it is larger than the sum of its proper divisors (23570811).

306420361 is a wasteful number, since it uses less digits than its factorization.

306420361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23570810.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 306420361 is about 17504.8667804128. The cubic root of 306420361 is about 674.1748387801.

Adding to 306420361 its reverse (163024603), we get a palindrome (469444964).

The spelling of 306420361 in words is "three hundred six million, four hundred twenty thousand, three hundred sixty-one".