231331203 has 12 divisors (see below), whose sum is σ = 337900680. Its totient is φ = 152487456.

The previous prime is 231331201. The next prime is 231331211. The reversal of 231331203 is 302133132.

It is not a de Polignac number, because 231331203 - 2¹ = 231331201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231331201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143601 + ... + 145202.

It is an arithmetic number, because the mean of its divisors is an integer number (28158390).

Almost surely, 2^231331203 is an apocalyptic number.

231331203 is a deficient number, since it is larger than the sum of its proper divisors (106569477).

231331203 is a wasteful number, since it uses less digits than its factorization.

231331203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288898 (or 288895 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 231331203 is about 15209.5760295940. The cubic root of 231331203 is about 613.8723496513.

Adding to 231331203 its reverse (302133132), we get a palindrome (533464335).

It can be divided in two parts, 23133 and 1203, that added together give a square (24336 = 156²).

The spelling of 231331203 in words is "two hundred thirty-one million, three hundred thirty-one thousand, two hundred three".