307145 has 8 divisors (see below), whose sum is σ = 376704. Its totient is φ = 240304.

The previous prime is 307129. The next prime is 307147. The reversal of 307145 is 541703.

It is a happy number.

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 307145 - 2⁴ = 307129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 307145.

It is not an unprimeable number, because it can be changed into a prime (307147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419 + ... + 888.

It is an arithmetic number, because the mean of its divisors is an integer number (47088).

2³⁰⁷¹⁴⁵ is an apocalyptic number.

It is an amenable number.

307145 is a deficient number, since it is larger than the sum of its proper divisors (69559).

307145 is a wasteful number, since it uses less digits than its factorization.

307145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1359.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 307145 is about 554.2066401623. The cubic root of 307145 is about 67.4705861785.

Adding to 307145 its reverse (541703), we get a palindrome (848848).

The spelling of 307145 in words is "three hundred seven thousand, one hundred forty-five".