231213222133111 has 8 divisors (see below), whose sum is σ = 231237395684640. Its totient is φ = 231189049244832.

The previous prime is 231213222133099. The next prime is 231213222133133. The reversal of 231213222133111 is 111331222312132.

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 231213222133111 - 2¹⁷ = 231213222002039 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231213222133111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231213222133171) 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, 998503101 + ... + 998734633.

It is an arithmetic number, because the mean of its divisors is an integer number (28904674460580).

Almost surely, 2^{231213222133111} is an apocalyptic number.

231213222133111 is a deficient number, since it is larger than the sum of its proper divisors (24173551529).

231213222133111 is a wasteful number, since it uses less digits than its factorization.

231213222133111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331625.

The product of its digits is 2592, while the sum is 28.

Adding to 231213222133111 its reverse (111331222312132), we get a palindrome (342544444445243).

The spelling of 231213222133111 in words is "two hundred thirty-one trillion, two hundred thirteen billion, two hundred twenty-two million, one hundred thirty-three thousand, one hundred eleven".