203312123001 has 24 divisors (see below), whose sum is σ = 323618270976. Its totient is φ = 122205494880.

The previous prime is 203312122967. The next prime is 203312123071. The reversal of 203312123001 is 100321213302.

203312123001 is a `hidden beast` number, since 20 + 331 + 2 + 12 + 300 + 1 = 666.

It is not a de Polignac number, because 203312123001 - 2⁷ = 203312122873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203312123071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20200905 + ... + 20210966.

It is an arithmetic number, because the mean of its divisors is an integer number (13484094624).

Almost surely, 2^203312123001 is an apocalyptic number.

It is an amenable number.

203312123001 is a deficient number, since it is larger than the sum of its proper divisors (120306147975).

203312123001 is a wasteful number, since it uses less digits than its factorization.

203312123001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40411933 (or 40411930 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 203312123001 its reverse (100321213302), we get a palindrome (303633336303).

The spelling of 203312123001 in words is "two hundred three billion, three hundred twelve million, one hundred twenty-three thousand, one".