231101111023 has 4 divisors (see below), whose sum is σ = 231106151808. Its totient is φ = 231096070240.

The previous prime is 231101110943. The next prime is 231101111027. The reversal of 231101111023 is 320111101132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231101111023 - 2⁹ = 231101110511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231101110988 and 231101111006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231101111027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2450986 + ... + 2543527.

It is an arithmetic number, because the mean of its divisors is an integer number (57776537952).

Almost surely, 2^231101111023 is an apocalyptic number.

231101111023 is a deficient number, since it is larger than the sum of its proper divisors (5040785).

231101111023 is an equidigital number, since it uses as much as digits as its factorization.

231101111023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5040784.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 231101111023 its reverse (320111101132), we get a palindrome (551212212155).

The spelling of 231101111023 in words is "two hundred thirty-one billion, one hundred one million, one hundred eleven thousand, twenty-three".