231023311231 has 8 divisors (see below), whose sum is σ = 244810686960. Its totient is φ = 217257909888.

The previous prime is 231023311229. The next prime is 231023311243. The reversal of 231023311231 is 132113320132.

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

It is a cyclic number.

It is not a de Polignac number, because 231023311231 - 2¹ = 231023311229 is a prime.

It is a super-2 number, since 2×231023311231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231023311201) 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, 5471941 + ... + 5513998.

It is an arithmetic number, because the mean of its divisors is an integer number (30601335870).

Almost surely, 2^231023311231 is an apocalyptic number.

231023311231 is a deficient number, since it is larger than the sum of its proper divisors (13787375729).

231023311231 is a wasteful number, since it uses less digits than its factorization.

231023311231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10987193.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 231023311231 its reverse (132113320132), we get a palindrome (363136631363).

It can be divided in two parts, 23102 and 3311231, that added together give a palindrome (3334333).

The spelling of 231023311231 in words is "two hundred thirty-one billion, twenty-three million, three hundred eleven thousand, two hundred thirty-one".