203131110000043 has 4 divisors (see below), whose sum is σ = 206963772452928. Its totient is φ = 199298447547160.

The previous prime is 203131110000001. The next prime is 203131110000079. The reversal of 203131110000043 is 340000011131302.

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

It is a cyclic number.

It is not a de Polignac number, because 203131110000043 - 2²⁹ = 203130573129131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203131110000443) 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, 1916331226363 + ... + 1916331226468.

It is an arithmetic number, because the mean of its divisors is an integer number (51740943113232).

Almost surely, 2^{203131110000043} is an apocalyptic number.

203131110000043 is a deficient number, since it is larger than the sum of its proper divisors (3832662452885).

203131110000043 is an equidigital number, since it uses as much as digits as its factorization.

203131110000043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3832662452884.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 203131110000043 its reverse (340000011131302), we get a palindrome (543131121131345).

The spelling of 203131110000043 in words is "two hundred three trillion, one hundred thirty-one billion, one hundred ten million, forty-three", and thus it is an aban number.