200431445 has 8 divisors (see below), whose sum is σ = 254665944. Its totient is φ = 150913024.

The previous prime is 200431417. The next prime is 200431447. The reversal of 200431445 is 544134002.

It can be written as a sum of positive squares in 4 ways, for example, as 47018449 + 153412996 = 6857^2 + 12386^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200431445 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 200431445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200431447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1178924 + ... + 1179093.

It is an arithmetic number, because the mean of its divisors is an integer number (31833243).

Almost surely, 2^200431445 is an apocalyptic number.

It is an amenable number.

200431445 is a deficient number, since it is larger than the sum of its proper divisors (54234499).

200431445 is a wasteful number, since it uses less digits than its factorization.

200431445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2358039.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 200431445 is about 14157.3812903376. The cubic root of 200431445 is about 585.2237632318.

Adding to 200431445 its reverse (544134002), we get a palindrome (744565447).

The spelling of 200431445 in words is "two hundred million, four hundred thirty-one thousand, four hundred forty-five".