200231421 has 32 divisors (see below), whose sum is σ = 295411200. Its totient is φ = 119867904.

The previous prime is 200231407. The next prime is 200231429. The reversal of 200231421 is 124132002.

It is not a de Polignac number, because 200231421 - 2⁷ = 200231293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 200231421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200231429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 573555 + ... + 573903.

It is an arithmetic number, because the mean of its divisors is an integer number (9231600).

Almost surely, 2^200231421 is an apocalyptic number.

It is an amenable number.

200231421 is a deficient number, since it is larger than the sum of its proper divisors (95179779).

200231421 is a wasteful number, since it uses less digits than its factorization.

200231421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 200231421 is about 14150.3152261708. The cubic root of 200231421 is about 585.0290204027.

Adding to 200231421 its reverse (124132002), we get a palindrome (324363423).

The spelling of 200231421 in words is "two hundred million, two hundred thirty-one thousand, four hundred twenty-one".