231244203 has 4 divisors (see below), whose sum is σ = 308325608. Its totient is φ = 154162800.

The previous prime is 231244199. The next prime is 231244207. The reversal of 231244203 is 302442132.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (231244199) and next prime (231244207).

It is not a de Polignac number, because 231244203 - 2² = 231244199 is a prime.

It is a super-2 number, since 2×231244203² = 106947762842210418, which contains 22 as substring.

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 231244203.

It is not an unprimeable number, because it can be changed into a prime (231244207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38540698 + ... + 38540703.

It is an arithmetic number, because the mean of its divisors is an integer number (77081402).

Almost surely, 2^231244203 is an apocalyptic number.

231244203 is a deficient number, since it is larger than the sum of its proper divisors (77081405).

231244203 is an equidigital number, since it uses as much as digits as its factorization.

231244203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77081404.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 231244203 is about 15206.7157203651. The cubic root of 231244203 is about 613.7953841140.

Adding to 231244203 its reverse (302442132), we get a palindrome (533686335).

The spelling of 231244203 in words is "two hundred thirty-one million, two hundred forty-four thousand, two hundred three".