231241123111 has 4 divisors (see below), whose sum is σ = 232659780472. Its totient is φ = 229822465752.

The previous prime is 231241123097. The next prime is 231241123123. The reversal of 231241123111 is 111321142132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231241123111 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 (231241123181) 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, 709328436 + ... + 709328761.

It is an arithmetic number, because the mean of its divisors is an integer number (58164945118).

Almost surely, 2^231241123111 is an apocalyptic number.

231241123111 is a deficient number, since it is larger than the sum of its proper divisors (1418657361).

231241123111 is a wasteful number, since it uses less digits than its factorization.

231241123111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418657360.

The product of its digits is 288, while the sum is 22.

Adding to 231241123111 its reverse (111321142132), we get a palindrome (342562265243).

The spelling of 231241123111 in words is "two hundred thirty-one billion, two hundred forty-one million, one hundred twenty-three thousand, one hundred eleven".