203312002 has 4 divisors (see below), whose sum is σ = 304968006. Its totient is φ = 101656000.

The previous prime is 203311991. The next prime is 203312033. The reversal of 203312002 is 200213302.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 200213302 = 2 ⋅100106651.

It can be written as a sum of positive squares in only one way, i.e., 187717401 + 15594601 = 13701^2 + 3949^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50827999 + ... + 50828002.

Almost surely, 2^203312002 is an apocalyptic number.

203312002 is a deficient number, since it is larger than the sum of its proper divisors (101656004).

203312002 is a wasteful number, since it uses less digits than its factorization.

203312002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101656003.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 203312002 is about 14258.7517686507. The cubic root of 203312002 is about 588.0140081041.

Adding to 203312002 its reverse (200213302), we get a palindrome (403525304).

The spelling of 203312002 in words is "two hundred three million, three hundred twelve thousand, two".