231020203303 has 4 divisors (see below), whose sum is σ = 238986417240. Its totient is φ = 223053989368.

The previous prime is 231020203279. The next prime is 231020203327. The reversal of 231020203303 is 303302020132.

It is a happy number.

231020203303 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (231020203279) and next prime (231020203327).

It is a cyclic number.

It is not a de Polignac number, because 231020203303 - 2³⁷ = 93581249831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231020203703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3983106925 + ... + 3983106982.

It is an arithmetic number, because the mean of its divisors is an integer number (59746604310).

Almost surely, 2^231020203303 is an apocalyptic number.

231020203303 is a deficient number, since it is larger than the sum of its proper divisors (7966213937).

231020203303 is an equidigital number, since it uses as much as digits as its factorization.

231020203303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7966213936.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 231020203303 its reverse (303302020132), we get a palindrome (534322223435).

The spelling of 231020203303 in words is "two hundred thirty-one billion, twenty million, two hundred three thousand, three hundred three".