203421200312 has 32 divisors (see below), whose sum is σ = 418641540480. Its totient is φ = 91896910560.

The previous prime is 203421200273. The next prime is 203421200351. The reversal of 203421200312 is 213002124302.

It is an interprime number because it is at equal distance from previous prime (203421200273) and next prime (203421200351).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7076468 + ... + 7105155.

It is an arithmetic number, because the mean of its divisors is an integer number (13082548140).

Almost surely, 2^203421200312 is an apocalyptic number.

203421200312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

203421200312 is an abundant number, since it is smaller than the sum of its proper divisors (215220340168).

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

203421200312 is a wasteful number, since it uses less digits than its factorization.

203421200312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14181803 (or 14181799 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 203421200312 its reverse (213002124302), we get a palindrome (416423324614).

The spelling of 203421200312 in words is "two hundred three billion, four hundred twenty-one million, two hundred thousand, three hundred twelve".