30112312120203 has 24 divisors (see below), whose sum is σ = 43803140193712. Its totient is φ = 18383351099904.

The previous prime is 30112312120183. The next prime is 30112312120279. The reversal of 30112312120203 is 30202121321103.

It is not a de Polignac number, because 30112312120203 - 2¹⁷ = 30112311989131 is a prime.

It is a super-2 number, since 2×30112312120203² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30112312120203.

It is not an unprimeable number, because it can be changed into a prime (30112312120003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 469314100 + ... + 469378257.

Almost surely, 2^{30112312120203} is an apocalyptic number.

30112312120203 is a deficient number, since it is larger than the sum of its proper divisors (13690828073509).

30112312120203 is a wasteful number, since it uses less digits than its factorization.

30112312120203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938692431 (or 938692414 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 30112312120203 its reverse (30202121321103), we get a palindrome (60314433441306).

The spelling of 30112312120203 in words is "thirty trillion, one hundred twelve billion, three hundred twelve million, one hundred twenty thousand, two hundred three".