203312129986 has 128 divisors (see below), whose sum is σ = 386601320448. Its totient is φ = 78192000000.

The previous prime is 203312129971. The next prime is 203312129989. The reversal of 203312129986 is 689921213302.

203312129986 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (203312129989) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 187039135 + ... + 187040221.

It is an arithmetic number, because the mean of its divisors is an integer number (3020322816).

Almost surely, 2^203312129986 is an apocalyptic number.

203312129986 is a deficient number, since it is larger than the sum of its proper divisors (183289190462).

203312129986 is a wasteful number, since it uses less digits than its factorization.

203312129986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496.

The product of its (nonzero) digits is 279936, while the sum is 46.

The spelling of 203312129986 in words is "two hundred three billion, three hundred twelve million, one hundred twenty-nine thousand, nine hundred eighty-six".