231232220203 has 4 divisors (see below), whose sum is σ = 231288172128. Its totient is φ = 231176268280.

The previous prime is 231232220179. The next prime is 231232220243. The reversal of 231232220203 is 302022232132.

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

It is a cyclic number.

It is not a de Polignac number, because 231232220203 - 2⁵ = 231232220171 is a prime.

It is a super-2 number, since 2×231232220203² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231232220243) 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, 27969763 + ... + 27978028.

It is an arithmetic number, because the mean of its divisors is an integer number (57822043032).

Almost surely, 2^231232220203 is an apocalyptic number.

231232220203 is a deficient number, since it is larger than the sum of its proper divisors (55951925).

231232220203 is an equidigital number, since it uses as much as digits as its factorization.

231232220203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55951924.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 231232220203 its reverse (302022232132), we get a palindrome (533254452335).

The spelling of 231232220203 in words is "two hundred thirty-one billion, two hundred thirty-two million, two hundred twenty thousand, two hundred three".