30503121 has 8 divisors (see below), whose sum is σ = 44368224. Its totient is φ = 18486720.

The previous prime is 30503119. The next prime is 30503149. The reversal of 30503121 is 12130503.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30503121 - 2¹ = 30503119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30503121.

It is not an unprimeable number, because it can be changed into a prime (30503021) 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, 462136 + ... + 462201.

It is an arithmetic number, because the mean of its divisors is an integer number (5546028).

Almost surely, 2^30503121 is an apocalyptic number.

It is an amenable number.

30503121 is a deficient number, since it is larger than the sum of its proper divisors (13865103).

30503121 is a wasteful number, since it uses less digits than its factorization.

30503121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924351.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 30503121 is about 5522.9630634289. The cubic root of 30503121 is about 312.4506452189.

Adding to 30503121 its reverse (12130503), we get a palindrome (42633624).

The spelling of 30503121 in words is "thirty million, five hundred three thousand, one hundred twenty-one".