231244112111 has 4 divisors (see below), whose sum is σ = 232775530224. Its totient is φ = 229712694000.

The previous prime is 231244112081. The next prime is 231244112123. The reversal of 231244112111 is 111211442132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231244112111 - 2²² = 231239917807 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 (231244112131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 765708830 + ... + 765709131.

It is an arithmetic number, because the mean of its divisors is an integer number (58193882556).

Almost surely, 2^231244112111 is an apocalyptic number.

231244112111 is a deficient number, since it is larger than the sum of its proper divisors (1531418113).

231244112111 is a wasteful number, since it uses less digits than its factorization.

231244112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531418112.

The product of its digits is 384, while the sum is 23.

Adding to 231244112111 its reverse (111211442132), we get a palindrome (342455554243).

The spelling of 231244112111 in words is "two hundred thirty-one billion, two hundred forty-four million, one hundred twelve thousand, one hundred eleven".