231101222231 has 8 divisors (see below), whose sum is σ = 266940449424. Its totient is φ = 197733665920.

The previous prime is 231101222173. The next prime is 231101222243. The reversal of 231101222231 is 132222101132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231101222231 is a prime.

It is a super-2 number, since 2×231101222231² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231106222231) 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 7 ways as a sum of consecutive naturals, for example, 617917520 + ... + 617917893.

It is an arithmetic number, because the mean of its divisors is an integer number (33367556178).

Almost surely, 2^231101222231 is an apocalyptic number.

231101222231 is a deficient number, since it is larger than the sum of its proper divisors (35839227193).

231101222231 is a wasteful number, since it uses less digits than its factorization.

231101222231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235835441.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 231101222231 its reverse (132222101132), we get a palindrome (363323323363).

The spelling of 231101222231 in words is "two hundred thirty-one billion, one hundred one million, two hundred twenty-two thousand, two hundred thirty-one".