201403203123 has 4 divisors (see below), whose sum is σ = 268537604168. Its totient is φ = 134268802080.

The previous prime is 201403203059. The next prime is 201403203173. The reversal of 201403203123 is 321302304102.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 201403203123 - 2⁶ = 201403203059 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201403203123.

It is not an unprimeable number, because it can be changed into a prime (201403203173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33567200518 + ... + 33567200523.

It is an arithmetic number, because the mean of its divisors is an integer number (67134401042).

Almost surely, 2^201403203123 is an apocalyptic number.

201403203123 is a deficient number, since it is larger than the sum of its proper divisors (67134401045).

201403203123 is an equidigital number, since it uses as much as digits as its factorization.

201403203123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67134401044.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 201403203123 its reverse (321302304102), we get a palindrome (522705507225).

The spelling of 201403203123 in words is "two hundred one billion, four hundred three million, two hundred three thousand, one hundred twenty-three".