231010120111 has 4 divisors (see below), whose sum is σ = 231011255800. Its totient is φ = 231008984424.

The previous prime is 231010120109. The next prime is 231010120199. The reversal of 231010120111 is 111021010132.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 231010120111 - 2¹ = 231010120109 is a prime.

It is a super-3 number, since 3×231010120111³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231010120091 and 231010120100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231010120511) 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, 169656 + ... + 700573.

It is an arithmetic number, because the mean of its divisors is an integer number (57752813950).

Almost surely, 2^231010120111 is an apocalyptic number.

231010120111 is a deficient number, since it is larger than the sum of its proper divisors (1135689).

231010120111 is an equidigital number, since it uses as much as digits as its factorization.

231010120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135688.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 231010120111 its reverse (111021010132), we get a palindrome (342031130243).

The spelling of 231010120111 in words is "two hundred thirty-one billion, ten million, one hundred twenty thousand, one hundred eleven".