231313220111 has 8 divisors (see below), whose sum is σ = 233371005120. Its totient is φ = 229255624192.

The previous prime is 231313220093. The next prime is 231313220113. The reversal of 231313220111 is 111022313132.

It is a happy number.

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 231313220111 - 2³⁴ = 214133350927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231313220113) 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, 3779210 + ... + 3839928.

It is an arithmetic number, because the mean of its divisors is an integer number (29171375640).

Almost surely, 2^231313220111 is an apocalyptic number.

231313220111 is a deficient number, since it is larger than the sum of its proper divisors (2057785009).

231313220111 is a wasteful number, since it uses less digits than its factorization.

231313220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94545.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 231313220111 its reverse (111022313132), we get a palindrome (342335533243).

The spelling of 231313220111 in words is "two hundred thirty-one billion, three hundred thirteen million, two hundred twenty thousand, one hundred eleven".