307133 has 4 divisors (see below), whose sum is σ = 308508. Its totient is φ = 305760.

The previous prime is 307129. The next prime is 307147. The reversal of 307133 is 331703.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331703 = 89 ⋅3727.

It can be written as a sum of positive squares in 2 ways, for example, as 268324 + 38809 = 518^2 + 197^2 .

It is a cyclic number.

It is not a de Polignac number, because 307133 - 2² = 307129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (307103) 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, 266 + ... + 827.

It is an arithmetic number, because the mean of its divisors is an integer number (77127).

2³⁰⁷¹³³ is an apocalyptic number.

It is an amenable number.

307133 is a deficient number, since it is larger than the sum of its proper divisors (1375).

307133 is a wasteful number, since it uses less digits than its factorization.

307133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374.

The product of its (nonzero) digits is 189, while the sum is 17.

The square root of 307133 is about 554.1958137698. The cubic root of 307133 is about 67.4697074865.

Adding to 307133 its reverse (331703), we get a palindrome (638836).

The spelling of 307133 in words is "three hundred seven thousand, one hundred thirty-three".