303243420340 has 24 divisors (see below), whose sum is σ = 727784209152. Its totient is φ = 103969172640.

The previous prime is 303243420289. The next prime is 303243420341. The reversal of 303243420340 is 43024342303.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 303243420299 and 303243420308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (303243420341) 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, 1083012076 + ... + 1083012355.

It is an arithmetic number, because the mean of its divisors is an integer number (30324342048).

Almost surely, 2^303243420340 is an apocalyptic number.

It is an amenable number.

303243420340 is an abundant number, since it is smaller than the sum of its proper divisors (424540788812).

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

303243420340 is a wasteful number, since it uses less digits than its factorization.

303243420340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166024447 (or 2166024445 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 28.

Adding to 303243420340 its reverse (43024342303), we get a palindrome (346267762643).

The spelling of 303243420340 in words is "three hundred three billion, two hundred forty-three million, four hundred twenty thousand, three hundred forty".