203421523010 has 16 divisors (see below), whose sum is σ = 370272886200. Its totient is φ = 80454354816.

The previous prime is 203421522971. The next prime is 203421523027. The reversal of 203421523010 is 10325124302.

It can be written as a sum of positive squares in 4 ways, for example, as 176380680529 + 27040842481 = 419977^2 + 164441^2 .

It is a super-3 number, since 3×203421523010³ (a number of 35 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114280865 + ... + 114282644.

Almost surely, 2^203421523010 is an apocalyptic number.

203421523010 is a deficient number, since it is larger than the sum of its proper divisors (166851363190).

203421523010 is a wasteful number, since it uses less digits than its factorization.

203421523010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228563605.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 203421523010 its reverse (10325124302), we get a palindrome (213746647312).

The spelling of 203421523010 in words is "two hundred three billion, four hundred twenty-one million, five hundred twenty-three thousand, ten".