30121331203 has 4 divisors (see below), whose sum is σ = 30254024520. Its totient is φ = 29988637888.

The previous prime is 30121331179. The next prime is 30121331239. The reversal of 30121331203 is 30213312103.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30121331203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30121331293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66346318 + ... + 66346771.

It is an arithmetic number, because the mean of its divisors is an integer number (7563506130).

Almost surely, 2^30121331203 is an apocalyptic number.

30121331203 is a deficient number, since it is larger than the sum of its proper divisors (132693317).

30121331203 is a wasteful number, since it uses less digits than its factorization.

30121331203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132693316.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 30121331203 its reverse (30213312103), we get a palindrome (60334643306).

The spelling of 30121331203 in words is "thirty billion, one hundred twenty-one million, three hundred thirty-one thousand, two hundred three".