231541403503 has 12 divisors (see below), whose sum is σ = 245996963280. Its totient is φ = 217890935552.

The previous prime is 231541403491. The next prime is 231541403507. The reversal of 231541403503 is 305304145132.

It is not a de Polignac number, because 231541403503 - 2²⁵ = 231507849071 is a prime.

It is a super-2 number, since 2×231541403503² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231541403507) 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, 2174163 + ... + 2278171.

It is an arithmetic number, because the mean of its divisors is an integer number (20499746940).

Almost surely, 2^231541403503 is an apocalyptic number.

231541403503 is a deficient number, since it is larger than the sum of its proper divisors (14455559777).

231541403503 is a wasteful number, since it uses less digits than its factorization.

231541403503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111746 (or 111729 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 231541403503 its reverse (305304145132), we get a palindrome (536845548635).

The spelling of 231541403503 in words is "two hundred thirty-one billion, five hundred forty-one million, four hundred three thousand, five hundred three".