211112331231 has 8 divisors (see below), whose sum is σ = 290563208704. Its totient is φ = 136201503960.

The previous prime is 211112331179. The next prime is 211112331233. The reversal of 211112331231 is 132133211112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211112331231 - 2⁷ = 211112331103 is a prime.

It is a super-2 number, since 2×211112331231² (a number of 23 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 = 211112331198 and 211112331207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211112331233) 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, 1135012441 + ... + 1135012626.

It is an arithmetic number, because the mean of its divisors is an integer number (36320401088).

Almost surely, 2^211112331231 is an apocalyptic number.

211112331231 is a deficient number, since it is larger than the sum of its proper divisors (79450877473).

211112331231 is a wasteful number, since it uses less digits than its factorization.

211112331231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2270025101.

The product of its digits is 216, while the sum is 21.

Adding to 211112331231 its reverse (132133211112), we get a palindrome (343245542343).

The spelling of 211112331231 in words is "two hundred eleven billion, one hundred twelve million, three hundred thirty-one thousand, two hundred thirty-one".