203323121312 has 24 divisors (see below), whose sum is σ = 400309058016. Its totient is φ = 101657328832.

The previous prime is 203323121227. The next prime is 203323121321. The reversal of 203323121312 is 213121323302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 736253 + ... + 974019.

It is an arithmetic number, because the mean of its divisors is an integer number (16679544084).

Almost surely, 2^203323121312 is an apocalyptic number.

It is an amenable number.

203323121312 is a deficient number, since it is larger than the sum of its proper divisors (196985936704).

203323121312 is a wasteful number, since it uses less digits than its factorization.

203323121312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264500 (or 264492 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 203323121312 its reverse (213121323302), we get a palindrome (416444444614).

The spelling of 203323121312 in words is "two hundred three billion, three hundred twenty-three million, one hundred twenty-one thousand, three hundred twelve".