203453521030 has 32 divisors (see below), whose sum is σ = 368188514496. Its totient is φ = 80943402624.

The previous prime is 203453521001. The next prime is 203453521069. The reversal of 203453521030 is 30125354302.

It is a self number, because there is not a number n which added to its sum of digits gives 203453521030.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7229647 + ... + 7257733.

It is an arithmetic number, because the mean of its divisors is an integer number (11505891078).

Almost surely, 2^203453521030 is an apocalyptic number.

203453521030 is a deficient number, since it is larger than the sum of its proper divisors (164734993466).

203453521030 is a wasteful number, since it uses less digits than its factorization.

203453521030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31968.

The product of its (nonzero) digits is 10800, while the sum is 28.

Adding to 203453521030 its reverse (30125354302), we get a palindrome (233578875332).

The spelling of 203453521030 in words is "two hundred three billion, four hundred fifty-three million, five hundred twenty-one thousand, thirty".