203240053 has 4 divisors (see below), whose sum is σ = 204203488. Its totient is φ = 202276620.

The previous prime is 203240047. The next prime is 203240069. The reversal of 203240053 is 350042302.

203240053 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 350042302 = 2 ⋅175021151.

It is a cyclic number.

It is not a de Polignac number, because 203240053 - 2¹⁷ = 203108981 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 203240053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203240153) 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, 481401 + ... + 481822.

It is an arithmetic number, because the mean of its divisors is an integer number (51050872).

Almost surely, 2^203240053 is an apocalyptic number.

It is an amenable number.

203240053 is a deficient number, since it is larger than the sum of its proper divisors (963435).

203240053 is an equidigital number, since it uses as much as digits as its factorization.

203240053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963434.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 203240053 is about 14256.2285685941. The cubic root of 203240053 is about 587.9446368733.

Adding to 203240053 its reverse (350042302), we get a palindrome (553282355).

The spelling of 203240053 in words is "two hundred three million, two hundred forty thousand, fifty-three".