306145 has 8 divisors (see below), whose sum is σ = 419904. Its totient is φ = 209904.

The previous prime is 306139. The next prime is 306149. The reversal of 306145 is 541603.

306145 is nontrivially palindromic in base 14.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 306145 - 2⁹ = 305633 is a prime.

It is a super-2 number, since 2×306145² = 187449522050, which contains 22 as substring.

It is a Duffinian number.

306145 is an undulating number in base 14.

It is not an unprimeable number, because it can be changed into a prime (306149) 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, 4339 + ... + 4408.

It is an arithmetic number, because the mean of its divisors is an integer number (52488).

2³⁰⁶¹⁴⁵ is an apocalyptic number.

306145 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

306145 is a deficient number, since it is larger than the sum of its proper divisors (113759).

306145 is an equidigital number, since it uses as much as digits as its factorization.

306145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8759.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 306145 is about 553.3037140667. The cubic root of 306145 is about 67.3972831867.

Adding to 306145 its reverse (541603), we get a palindrome (847748).

The spelling of 306145 in words is "three hundred six thousand, one hundred forty-five".