30138303 has 16 divisors (see below), whose sum is σ = 45158400. Its totient is φ = 17739744.

The previous prime is 30138289. The next prime is 30138359. The reversal of 30138303 is 30383103.

It is not a de Polignac number, because 30138303 - 2⁵ = 30138271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30138303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30131303) 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, 15903 + ... + 17696.

It is an arithmetic number, because the mean of its divisors is an integer number (2822400).

Almost surely, 2^30138303 is an apocalyptic number.

30138303 is a deficient number, since it is larger than the sum of its proper divisors (15020097).

30138303 is a wasteful number, since it uses less digits than its factorization.

30138303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33638.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 30138303 is about 5489.8363363583. The cubic root of 30138303 is about 311.2000071316.

The spelling of 30138303 in words is "thirty million, one hundred thirty-eight thousand, three hundred three".