203001312012 has 24 divisors (see below), whose sum is σ = 473677038912. Its totient is φ = 67666059600.

The previous prime is 203001312011. The next prime is 203001312013. The reversal of 203001312012 is 210213100302.

It is an interprime number because it is at equal distance from previous prime (203001312011) and next prime (203001312013).

It is a junction number, because it is equal to n+sod(n) for n = 203001311982 and 203001312000.

It is not an unprimeable number, because it can be changed into a prime (203001312011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1360587 + ... + 1502397.

It is an arithmetic number, because the mean of its divisors is an integer number (19736543288).

Almost surely, 2^203001312012 is an apocalyptic number.

It is an amenable number.

203001312012 is an abundant number, since it is smaller than the sum of its proper divisors (270675726900).

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

203001312012 is a wasteful number, since it uses less digits than its factorization.

203001312012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261109 (or 261107 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 203001312012 its reverse (210213100302), we get a palindrome (413214412314).

The spelling of 203001312012 in words is "two hundred three billion, one million, three hundred twelve thousand, twelve".