203311212000000 has 1008 divisors, whose sum is σ = 729752314050816. Its totient is φ = 49953024000000.

The previous prime is 203311211999999. The next prime is 203311212000007. The reversal of 203311212000000 is 212113302.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (203311212000007) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 126515999197 + ... + 126516000803.

Almost surely, 2^{203311212000000} is an apocalyptic number.

203311212000000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203311212000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (364876157025408).

203311212000000 is an abundant number, since it is smaller than the sum of its proper divisors (526441102050816).

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

203311212000000 is an frugal number, since it uses more digits than its factorization.

203311212000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2480 (or 2441 counting only the distinct ones).

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

Adding to 203311212000000 its reverse (212113302), we get a palindrome (203311424113302).

The spelling of 203311212000000 in words is "two hundred three trillion, three hundred eleven billion, two hundred twelve million", and thus it is an aban number.