203912 has 16 divisors (see below), whose sum is σ = 388800. Its totient is φ = 100240.

The previous prime is 203911. The next prime is 203921. The reversal of 203912 is 219302.

It is not an unprimeable number, because it can be changed into a prime (203911) 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, 389 + ... + 747.

It is an arithmetic number, because the mean of its divisors is an integer number (24300).

2²⁰³⁹¹² is an apocalyptic number.

It is an amenable number.

203912 is a deficient number, since it is larger than the sum of its proper divisors (184888).

203912 is a wasteful number, since it uses less digits than its factorization.

203912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 203912 is about 451.5661634799. The cubic root of 203912 is about 58.8591873215.

It can be divided in two parts, 203 and 912, that multiplied together give a triangular number (185136 = T₆₀₈).

The spelling of 203912 in words is "two hundred three thousand, nine hundred twelve".