203431053 has 32 divisors (see below), whose sum is σ = 318931200. Its totient is φ = 112919040.

The previous prime is 203431031. The next prime is 203431057. The reversal of 203431053 is 350134302.

It is not a de Polignac number, because 203431053 - 2¹⁴ = 203414669 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203431057) 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, 300151 + ... + 300827.

It is an arithmetic number, because the mean of its divisors is an integer number (9966600).

Almost surely, 2^203431053 is an apocalyptic number.

It is an amenable number.

203431053 is a deficient number, since it is larger than the sum of its proper divisors (115500147).

203431053 is a wasteful number, since it uses less digits than its factorization.

203431053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 203431053 is about 14262.9258218642. The cubic root of 203431053 is about 588.1287578413.

Adding to 203431053 its reverse (350134302), we get a palindrome (553565355).

The spelling of 203431053 in words is "two hundred three million, four hundred thirty-one thousand, fifty-three".