203404322043 has 32 divisors (see below), whose sum is σ = 325449768000. Its totient is φ = 124813156608.

The previous prime is 203404321993. The next prime is 203404322047. The reversal of 203404322043 is 340223404302.

203404322043 is a `hidden beast` number, since 20 + 3 + 4 + 0 + 432 + 204 + 3 = 666.

It is not a de Polignac number, because 203404322043 - 2¹⁰ = 203404321019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 203404321998 and 203404322016.

It is not an unprimeable number, because it can be changed into a prime (203404322047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 707730 + ... + 952727.

It is an arithmetic number, because the mean of its divisors is an integer number (10170305250).

Almost surely, 2^203404322043 is an apocalyptic number.

203404322043 is a deficient number, since it is larger than the sum of its proper divisors (122045445957).

203404322043 is a wasteful number, since it uses less digits than its factorization.

203404322043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660828 (or 1660822 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

Adding to 203404322043 its reverse (340223404302), we get a palindrome (543627726345).

The spelling of 203404322043 in words is "two hundred three billion, four hundred four million, three hundred twenty-two thousand, forty-three".