203431201 has 4 divisors (see below), whose sum is σ = 210446100. Its totient is φ = 196416304.

The previous prime is 203431153. The next prime is 203431211. The reversal of 203431201 is 102134302.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102134302 = 2 ⋅51067151.

It can be written as a sum of positive squares in 2 ways, for example, as 156850576 + 46580625 = 12524^2 + 6825^2 .

It is not a de Polignac number, because 203431201 - 2⁷ = 203431073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203431211) 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, 3507406 + ... + 3507463.

It is an arithmetic number, because the mean of its divisors is an integer number (52611525).

Almost surely, 2^203431201 is an apocalyptic number.

It is an amenable number.

203431201 is a deficient number, since it is larger than the sum of its proper divisors (7014899).

203431201 is an equidigital number, since it uses as much as digits as its factorization.

203431201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7014898.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 203431201 is about 14262.9310101395. The cubic root of 203431201 is about 588.1289004663.

Adding to 203431201 its reverse (102134302), we get a palindrome (305565503).

The spelling of 203431201 in words is "two hundred three million, four hundred thirty-one thousand, two hundred one".