203431044 has 96 divisors (see below), whose sum is σ = 529514496. Its totient is φ = 60459520.

The previous prime is 203431031. The next prime is 203431057. The reversal of 203431044 is 440134302.

It is an interprime number because it is at equal distance from previous prime (203431031) and next prime (203431057).

It is a self number, because there is not a number n which added to its sum of digits gives 203431044.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 896059 + ... + 896285.

It is an arithmetic number, because the mean of its divisors is an integer number (5515776).

Almost surely, 2^203431044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203431044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264757248).

203431044 is an abundant number, since it is smaller than the sum of its proper divisors (326083452).

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

203431044 is a wasteful number, since it uses less digits than its factorization.

203431044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 203431044 is about 14262.9255063609. The cubic root of 203431044 is about 588.1287491682.

Adding to 203431044 its reverse (440134302), we get a palindrome (643565346).

The spelling of 203431044 in words is "two hundred three million, four hundred thirty-one thousand, forty-four".