203311220030 has 16 divisors (see below), whose sum is σ = 366209005824. Its totient is φ = 81269196960.

The previous prime is 203311220009. The next prime is 203311220039. The reversal of 203311220030 is 30022113302.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 203311219990 and 203311220008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203311220039) 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, 6895937 + ... + 6925356.

It is an arithmetic number, because the mean of its divisors is an integer number (22888062864).

Almost surely, 2^203311220030 is an apocalyptic number.

203311220030 is a deficient number, since it is larger than the sum of its proper divisors (162897785794).

203311220030 is a wasteful number, since it uses less digits than its factorization.

203311220030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13822771.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 203311220030 its reverse (30022113302), we get a palindrome (233333333332).

The spelling of 203311220030 in words is "two hundred three billion, three hundred eleven million, two hundred twenty thousand, thirty".