303140 has 24 divisors (see below), whose sum is σ = 665280. Its totient is φ = 115808.

The previous prime is 303139. The next prime is 303143. The reversal of 303140 is 41303.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 303140.

It is not an unprimeable number, because it can be changed into a prime (303143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131 + ... + 789.

It is an arithmetic number, because the mean of its divisors is an integer number (27720).

2³⁰³¹⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 303140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332640).

303140 is an abundant number, since it is smaller than the sum of its proper divisors (362140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

303140 is a wasteful number, since it uses less digits than its factorization.

303140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691 (or 689 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 303140 is about 550.5815107684. The cubic root of 303140 is about 67.1760425749.

Adding to 303140 its reverse (41303), we get a palindrome (344443).

The spelling of 303140 in words is "three hundred three thousand, one hundred forty", and thus it is an iban number.