231531503223243 has 8 divisors (see below), whose sum is σ = 324956495752000. Its totient is φ = 146230423088328.

The previous prime is 231531503223193. The next prime is 231531503223247. The reversal of 231531503223243 is 342322305135132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231531503223243 - 2⁶ = 231531503223179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231531503223247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2030978098393 + ... + 2030978098506.

It is an arithmetic number, because the mean of its divisors is an integer number (40619561969000).

Almost surely, 2^{231531503223243} is an apocalyptic number.

231531503223243 is a deficient number, since it is larger than the sum of its proper divisors (93424992528757).

231531503223243 is a wasteful number, since it uses less digits than its factorization.

231531503223243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4061956196921.

The product of its (nonzero) digits is 388800, while the sum is 39.

Adding to 231531503223243 its reverse (342322305135132), we get a palindrome (573853808358375).

The spelling of 231531503223243 in words is "two hundred thirty-one trillion, five hundred thirty-one billion, five hundred three million, two hundred twenty-three thousand, two hundred forty-three".