303234138 has 32 divisors (see below), whose sum is σ = 674424000. Its totient is φ = 100992528.

The previous prime is 303234137. The next prime is 303234149. The reversal of 303234138 is 831432303.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (303234131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117688 + ... + 120236.

It is an arithmetic number, because the mean of its divisors is an integer number (21075750).

Almost surely, 2^303234138 is an apocalyptic number.

303234138 is an abundant number, since it is smaller than the sum of its proper divisors (371189862).

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

303234138 is a wasteful number, since it uses less digits than its factorization.

303234138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4763 (or 4757 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 303234138 is about 17413.6193251145. The cubic root of 303234138 is about 671.8299553807.

The spelling of 303234138 in words is "three hundred three million, two hundred thirty-four thousand, one hundred thirty-eight".