203003131112012 has 72 divisors (see below), whose sum is σ = 447362477120160. Its totient is φ = 78898749177600.

The previous prime is 203003131112003. The next prime is 203003131112017. The reversal of 203003131112012 is 210211131300302.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (203003131112017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71864039 + ... + 74635422.

It is an arithmetic number, because the mean of its divisors is an integer number (6213367737780).

Almost surely, 2^{203003131112012} is an apocalyptic number.

203003131112012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

203003131112012 is an abundant number, since it is smaller than the sum of its proper divisors (244359346008148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

203003131112012 is a wasteful number, since it uses less digits than its factorization.

203003131112012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146499903 (or 146499890 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 203003131112012 its reverse (210211131300302), we get a palindrome (413214262412314).

The spelling of 203003131112012 in words is "two hundred three trillion, three billion, one hundred thirty-one million, one hundred twelve thousand, twelve".