2013203421243 has 18 divisors (see below), whose sum is σ = 3382729558884. Its totient is φ = 1150401954744.

The previous prime is 2013203421239. The next prime is 2013203421253. The reversal of 2013203421243 is 3421243023102.

2013203421243 is a `hidden beast` number, since 2 + 0 + 13 + 203 + 421 + 24 + 3 = 666.

It is not a de Polignac number, because 2013203421243 - 2² = 2013203421239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2013203421233) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2282543121 + ... + 2282544002.

It is an arithmetic number, because the mean of its divisors is an integer number (187929419938).

Almost surely, 2^{2013203421243} is an apocalyptic number.

2013203421243 is a deficient number, since it is larger than the sum of its proper divisors (1369526137641).

2013203421243 is a wasteful number, since it uses less digits than its factorization.

2013203421243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4565087143 (or 4565087133 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 2013203421243 its reverse (3421243023102), we get a palindrome (5434446444345).

The spelling of 2013203421243 in words is "two trillion, thirteen billion, two hundred three million, four hundred twenty-one thousand, two hundred forty-three".