200331993 has 4 divisors (see below), whose sum is σ = 267109328. Its totient is φ = 133554660.

The previous prime is 200331983. The next prime is 200332007. The reversal of 200331993 is 399133002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 200331993 - 2⁴ = 200331977 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 200331993.

It is not an unprimeable number, because it can be changed into a prime (200331983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33388663 + ... + 33388668.

It is an arithmetic number, because the mean of its divisors is an integer number (66777332).

Almost surely, 2^200331993 is an apocalyptic number.

It is an amenable number.

200331993 is a deficient number, since it is larger than the sum of its proper divisors (66777335).

200331993 is an equidigital number, since it uses as much as digits as its factorization.

200331993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66777334.

The product of its (nonzero) digits is 4374, while the sum is 30.

The square root of 200331993 is about 14153.8684817968. The cubic root of 200331993 is about 585.1269532349.

Adding to 200331993 its reverse (399133002), we get a palindrome (599464995).

The spelling of 200331993 in words is "two hundred million, three hundred thirty-one thousand, nine hundred ninety-three".