20120031203 has 4 divisors (see below), whose sum is σ = 20120342328. Its totient is φ = 20119720080.

The previous prime is 20120031187. The next prime is 20120031223. The reversal of 20120031203 is 30213002102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30213002102 = 2 ⋅15106501051.

It is a cyclic number.

It is not a de Polignac number, because 20120031203 - 2⁴ = 20120031187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120031223) 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 3 ways as a sum of consecutive naturals, for example, 18026 + ... + 201407.

It is an arithmetic number, because the mean of its divisors is an integer number (5030085582).

Almost surely, 2^20120031203 is an apocalyptic number.

20120031203 is a deficient number, since it is larger than the sum of its proper divisors (311125).

20120031203 is an equidigital number, since it uses as much as digits as its factorization.

20120031203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311124.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20120031203 its reverse (30213002102), we get a palindrome (50333033305).

The spelling of 20120031203 in words is "twenty billion, one hundred twenty million, thirty-one thousand, two hundred three".