203012111043 has 72 divisors (see below), whose sum is σ = 345202698672. Its totient is φ = 114622687872.

The previous prime is 203012111041. The next prime is 203012111063. The reversal of 203012111043 is 340111210302.

It is not a de Polignac number, because 203012111043 - 2¹ = 203012111041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203012111041) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 18727821 + ... + 18738657.

It is an arithmetic number, because the mean of its divisors is an integer number (4794481926).

Almost surely, 2^203012111043 is an apocalyptic number.

203012111043 is a deficient number, since it is larger than the sum of its proper divisors (142190587629).

203012111043 is a wasteful number, since it uses less digits than its factorization.

203012111043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11361 (or 11351 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 203012111043 its reverse (340111210302), we get a palindrome (543123321345).

The spelling of 203012111043 in words is "two hundred three billion, twelve million, one hundred eleven thousand, forty-three".