1201031323203 has 16 divisors (see below), whose sum is σ = 1603084918176. Its totient is φ = 799832866560.

The previous prime is 1201031323189. The next prime is 1201031323207. The reversal of 1201031323203 is 3023231301021.

It is not a de Polignac number, because 1201031323203 - 2²⁰ = 1201030274627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1201031323203.

It is not an unprimeable number, because it can be changed into a prime (1201031323207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24820813 + ... + 24869153.

It is an arithmetic number, because the mean of its divisors is an integer number (100192807386).

Almost surely, 2^{1201031323203} is an apocalyptic number.

1201031323203 is a deficient number, since it is larger than the sum of its proper divisors (402053594973).

1201031323203 is a wasteful number, since it uses less digits than its factorization.

1201031323203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57014.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1201031323203 its reverse (3023231301021), we get a palindrome (4224262624224).

The spelling of 1201031323203 in words is "one trillion, two hundred one billion, thirty-one million, three hundred twenty-three thousand, two hundred three".