203503431053 has 8 divisors (see below), whose sum is σ = 219704074296. Its totient is φ = 187380864000.

The previous prime is 203503431029. The next prime is 203503431127. The reversal of 203503431053 is 350134305302.

It can be written as a sum of positive squares in 4 ways, for example, as 112457610409 + 91045820644 = 335347^2 + 301738^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 203503431053 - 2⁶ = 203503430989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203503431353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19513628 + ... + 19524053.

It is an arithmetic number, because the mean of its divisors is an integer number (27463009287).

Almost surely, 2^203503431053 is an apocalyptic number.

It is an amenable number.

203503431053 is a deficient number, since it is larger than the sum of its proper divisors (16200643243).

203503431053 is a wasteful number, since it uses less digits than its factorization.

203503431053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39038095.

The product of its (nonzero) digits is 16200, while the sum is 29.

Adding to 203503431053 its reverse (350134305302), we get a palindrome (553637736355).

The spelling of 203503431053 in words is "two hundred three billion, five hundred three million, four hundred thirty-one thousand, fifty-three".