203231243 has 16 divisors (see below), whose sum is σ = 229340160. Its totient is φ = 179051136.

The previous prime is 203231207. The next prime is 203231251. The reversal of 203231243 is 342132302.

It is not a de Polignac number, because 203231243 - 2⁶ = 203231179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203234243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12848 + ... + 23906.

It is an arithmetic number, because the mean of its divisors is an integer number (14333760).

Almost surely, 2^203231243 is an apocalyptic number.

203231243 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

203231243 is a deficient number, since it is larger than the sum of its proper divisors (26108917).

203231243 is a wasteful number, since it uses less digits than its factorization.

203231243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11146.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 203231243 is about 14255.9195774948. The cubic root of 203231243 is about 587.9361413906.

Adding to 203231243 its reverse (342132302), we get a palindrome (545363545).

The spelling of 203231243 in words is "two hundred three million, two hundred thirty-one thousand, two hundred forty-three".