231111120203223 has 32 divisors (see below), whose sum is σ = 340825138030272. Its totient is φ = 138376636416000.

The previous prime is 231111120203129. The next prime is 231111120203269. The reversal of 231111120203223 is 322302021111132.

It is not a de Polignac number, because 231111120203223 - 2¹⁰ = 231111120202199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231111120203193 and 231111120203202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231111120203123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118165573 + ... + 120105473.

It is an arithmetic number, because the mean of its divisors is an integer number (10650785563446).

Almost surely, 2^{231111120203223} is an apocalyptic number.

231111120203223 is a deficient number, since it is larger than the sum of its proper divisors (109714017827049).

231111120203223 is a wasteful number, since it uses less digits than its factorization.

231111120203223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022515.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 231111120203223 its reverse (322302021111132), we get a palindrome (553413141314355).

The spelling of 231111120203223 in words is "two hundred thirty-one trillion, one hundred eleven billion, one hundred twenty million, two hundred three thousand, two hundred twenty-three".