231112133023331 has 4 divisors (see below), whose sum is σ = 264128152026672. Its totient is φ = 198096114019992.

The previous prime is 231112133023267. The next prime is 231112133023333. The reversal of 231112133023331 is 133320331211132.

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 231112133023331 - 2⁶ = 231112133023267 is a prime.

It is a super-2 number, since 2×231112133023331² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231112133023294 and 231112133023303.

It is not an unprimeable number, because it can be changed into a prime (231112133023333) 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, 16508009501660 + ... + 16508009501673.

It is an arithmetic number, because the mean of its divisors is an integer number (66032038006668).

Almost surely, 2^{231112133023331} is an apocalyptic number.

231112133023331 is a deficient number, since it is larger than the sum of its proper divisors (33016019003341).

231112133023331 is an equidigital number, since it uses as much as digits as its factorization.

231112133023331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33016019003340.

The product of its (nonzero) digits is 5832, while the sum is 29.

Adding to 231112133023331 its reverse (133320331211132), we get a palindrome (364432464234463).

The spelling of 231112133023331 in words is "two hundred thirty-one trillion, one hundred twelve billion, one hundred thirty-three million, twenty-three thousand, three hundred thirty-one".