30312133203 has 16 divisors (see below), whose sum is σ = 46683927936. Its totient is φ = 17290343040.

The previous prime is 30312133133. The next prime is 30312133213. The reversal of 30312133203 is 30233121303.

It is not a de Polignac number, because 30312133203 - 2⁸ = 30312132947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30312133203.

It is not an unprimeable number, because it can be changed into a prime (30312133213) 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, 27015601 + ... + 27016722.

It is an arithmetic number, because the mean of its divisors is an integer number (2917745496).

Almost surely, 2^30312133203 is an apocalyptic number.

30312133203 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

30312133203 is a deficient number, since it is larger than the sum of its proper divisors (16371794733).

30312133203 is a wasteful number, since it uses less digits than its factorization.

30312133203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54032354.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 30312133203 its reverse (30233121303), we get a palindrome (60545254506).

It can be divided in two parts, 3031213 and 3203, that added together give a triangular number (3034416 = T₂₄₆₃).

The spelling of 30312133203 in words is "thirty billion, three hundred twelve million, one hundred thirty-three thousand, two hundred three".