231121121033223 has 8 divisors (see below), whose sum is σ = 342401660790000. Its totient is φ = 154080747355464.

The previous prime is 231121121033221. The next prime is 231121121033233. The reversal of 231121121033223 is 322330121121132.

231121121033223 is a `hidden beast` number, since 2 + 3 + 1 + 121 + 1 + 210 + 3 + 322 + 3 = 666.

It is not a de Polignac number, because 231121121033223 - 2¹ = 231121121033221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 8560041519749 = 231121121033223 / (2 + 3 + 1 + 1 + 2 + 1 + 1 + 2 + 1 + 0 + 3 + 3 + 2 + 2 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231121121033221) 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, 4280020759848 + ... + 4280020759901.

It is an arithmetic number, because the mean of its divisors is an integer number (42800207598750).

Almost surely, 2^{231121121033223} is an apocalyptic number.

231121121033223 is a deficient number, since it is larger than the sum of its proper divisors (111280539756777).

231121121033223 is an equidigital number, since it uses as much as digits as its factorization.

231121121033223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8560041519758 (or 8560041519752 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 231121121033223 its reverse (322330121121132), we get a palindrome (553451242154355).

The spelling of 231121121033223 in words is "two hundred thirty-one trillion, one hundred twenty-one billion, one hundred twenty-one million, thirty-three thousand, two hundred twenty-three".