306541145 has 4 divisors (see below), whose sum is σ = 367849380. Its totient is φ = 245232912.

The previous prime is 306541141. The next prime is 306541153. The reversal of 306541145 is 541145603.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 234579856 + 71961289 = 15316^2 + 8483^2 .

It is a cyclic number.

It is not a de Polignac number, because 306541145 - 2² = 306541141 is a prime.

It is a super-2 number, since 2×306541145² = 187934947155822050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (306541141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30654110 + ... + 30654119.

It is an arithmetic number, because the mean of its divisors is an integer number (91962345).

Almost surely, 2^306541145 is an apocalyptic number.

It is an amenable number.

306541145 is a deficient number, since it is larger than the sum of its proper divisors (61308235).

306541145 is an equidigital number, since it uses as much as digits as its factorization.

306541145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61308234.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 306541145 is about 17508.3164524748. The cubic root of 306541145 is about 674.2634086525.

Adding to 306541145 its reverse (541145603), we get a palindrome (847686748).

The spelling of 306541145 in words is "three hundred six million, five hundred forty-one thousand, one hundred forty-five".