203431421323410 has 128 divisors (see below), whose sum is σ = 560272029166080. Its totient is φ = 46308017793024.

The previous prime is 203431421323393. The next prime is 203431421323439. The reversal of 203431421323410 is 14323124134302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 147146292 + ... + 148522368.

It is an arithmetic number, because the mean of its divisors is an integer number (4377125227860).

Almost surely, 2^{203431421323410} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203431421323410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280136014583040).

203431421323410 is an abundant number, since it is smaller than the sum of its proper divisors (356840607842670).

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

203431421323410 is a wasteful number, since it uses less digits than its factorization.

203431421323410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378980.

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 203431421323410 its reverse (14323124134302), we get a palindrome (217754545457712).

The spelling of 203431421323410 in words is "two hundred three trillion, four hundred thirty-one billion, four hundred twenty-one million, three hundred twenty-three thousand, four hundred ten".