200021431 has 8 divisors (see below), whose sum is σ = 202577760. Its totient is φ = 197478432.

The previous prime is 200021401. The next prime is 200021447. The reversal of 200021431 is 134120002.

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

It is a cyclic number.

It is not a de Polignac number, because 200021431 - 2⁵ = 200021399 is a prime.

It is a super-2 number, since 2×200021431² = 80017145718575522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200021401) 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, 28806 + ... + 35068.

It is an arithmetic number, because the mean of its divisors is an integer number (25322220).

Almost surely, 2^200021431 is an apocalyptic number.

200021431 is a deficient number, since it is larger than the sum of its proper divisors (2556329).

200021431 is a wasteful number, since it uses less digits than its factorization.

200021431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6665.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 200021431 is about 14142.8933037056. The cubic root of 200021431 is about 584.8244351046.

Adding to 200021431 its reverse (134120002), we get a palindrome (334141433).

The spelling of 200021431 in words is "two hundred million, twenty-one thousand, four hundred thirty-one".