303440214 has 64 divisors (see below), whose sum is σ = 781074432. Its totient is φ = 76269600.

The previous prime is 303440213. The next prime is 303440227. The reversal of 303440214 is 412044303.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (303440213) 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 31 ways as a sum of consecutive naturals, for example, 3729 + ... + 24915.

It is an arithmetic number, because the mean of its divisors is an integer number (12204288).

Almost surely, 2^303440214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 303440214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (390537216).

303440214 is an abundant number, since it is smaller than the sum of its proper divisors (477634218).

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

303440214 is a wasteful number, since it uses less digits than its factorization.

303440214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21241.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 303440214 is about 17419.5354128633. The cubic root of 303440214 is about 671.9821113790.

Adding to 303440214 its reverse (412044303), we get a palindrome (715484517).

It can be divided in two parts, 3034402 and 14, that added together give a triangular number (3034416 = T₂₄₆₃).

The spelling of 303440214 in words is "three hundred three million, four hundred forty thousand, two hundred fourteen".