203243213000 has 64 divisors (see below), whose sum is σ = 475885238400. Its totient is φ = 81246667200.

The previous prime is 203243212961. The next prime is 203243213003. The reversal of 203243213000 is 312342302.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (203243213003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1564541 + ... + 1689459.

It is an arithmetic number, because the mean of its divisors is an integer number (7435706850).

Almost surely, 2^203243213000 is an apocalyptic number.

203243213000 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 203243213000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237942619200).

203243213000 is an abundant number, since it is smaller than the sum of its proper divisors (272642025400).

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

203243213000 is a wasteful number, since it uses less digits than its factorization.

203243213000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126567 (or 126553 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 203243213000 its reverse (312342302), we get a palindrome (203555555302).

The spelling of 203243213000 in words is "two hundred three billion, two hundred forty-three million, two hundred thirteen thousand".