203422324531 has 16 divisors (see below), whose sum is σ = 212888160000. Its totient is φ = 194178813408.

The previous prime is 203422324529. The next prime is 203422324561. The reversal of 203422324531 is 135423224302.

It is a cyclic number.

It is not a de Polignac number, because 203422324531 - 2¹ = 203422324529 is a prime.

It is a super-2 number, since 2×203422324531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203422324493 and 203422324502.

It is not an unprimeable number, because it can be changed into a prime (203422324561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 995946 + ... + 1182688.

It is an arithmetic number, because the mean of its divisors is an integer number (13305510000).

Almost surely, 2^203422324531 is an apocalyptic number.

203422324531 is a deficient number, since it is larger than the sum of its proper divisors (9465835469).

203422324531 is a wasteful number, since it uses less digits than its factorization.

203422324531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187338.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 203422324531 its reverse (135423224302), we get a palindrome (338845548833).

The spelling of 203422324531 in words is "two hundred three billion, four hundred twenty-two million, three hundred twenty-four thousand, five hundred thirty-one".