203130012312 has 48 divisors (see below), whose sum is σ = 550221399000. Its totient is φ = 67700451456.

The previous prime is 203130012299. The next prime is 203130012313. The reversal of 203130012312 is 213210031302.

203130012312 is a `hidden beast` number, since 20 + 31 + 300 + 1 + 2 + 312 = 666.

203130012312 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203130012313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 324364 + ... + 715172.

Almost surely, 2^203130012312 is an apocalyptic number.

It is an amenable number.

203130012312 is an abundant number, since it is smaller than the sum of its proper divisors (347091386688).

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

203130012312 is a wasteful number, since it uses less digits than its factorization.

203130012312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398040 (or 398033 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 203130012312 its reverse (213210031302), we get a palindrome (416340043614).

The spelling of 203130012312 in words is "two hundred three billion, one hundred thirty million, twelve thousand, three hundred twelve".