203442312 has 16 divisors (see below), whose sum is σ = 508605840. Its totient is φ = 67814096.

The previous prime is 203442311. The next prime is 203442353. The reversal of 203442312 is 213244302.

It is not an unprimeable number, because it can be changed into a prime (203442311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4238358 + ... + 4238405.

It is an arithmetic number, because the mean of its divisors is an integer number (31787865).

Almost surely, 2^203442312 is an apocalyptic number.

It is an amenable number.

203442312 is an abundant number, since it is smaller than the sum of its proper divisors (305163528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

203442312 is a wasteful number, since it uses less digits than its factorization.

203442312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8476772 (or 8476768 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 203442312 is about 14263.3205110171. The cubic root of 203442312 is about 588.1396077409.

Adding to 203442312 its reverse (213244302), we get a palindrome (416686614).

The spelling of 203442312 in words is "two hundred three million, four hundred forty-two thousand, three hundred twelve".