203131121213043 has 12 divisors (see below), whose sum is σ = 293444173915360. Its totient is φ = 135405722374416.

The previous prime is 203131121212967. The next prime is 203131121213047. The reversal of 203131121213043 is 340312121131302.

203131121213043 is a `hidden beast` number, since 2 + 0 + 3 + 1 + 311 + 21 + 21 + 304 + 3 = 666.

It is not a de Polignac number, because 203131121213043 - 2¹⁸ = 203131120950899 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203131121212998 and 203131121213016.

It is not an unprimeable number, because it can be changed into a prime (203131121213047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1252006123 + ... + 1252168356.

Almost surely, 2^{203131121213043} is an apocalyptic number.

203131121213043 is a deficient number, since it is larger than the sum of its proper divisors (90313052702317).

203131121213043 is a wasteful number, since it uses less digits than its factorization.

203131121213043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504183498 (or 2504183495 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 203131121213043 its reverse (340312121131302), we get a palindrome (543443242344345).

The spelling of 203131121213043 in words is "two hundred three trillion, one hundred thirty-one billion, one hundred twenty-one million, two hundred thirteen thousand, forty-three".