231304210111 has 32 divisors (see below), whose sum is σ = 258610085888. Its totient is φ = 205524345600.

The previous prime is 231304210099. The next prime is 231304210127. The reversal of 231304210111 is 111012403132.

It is a cyclic number.

It is not a de Polignac number, because 231304210111 - 2²¹ = 231302112959 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 (231304210411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10709155 + ... + 10730731.

It is an arithmetic number, because the mean of its divisors is an integer number (8081565184).

Almost surely, 2^231304210111 is an apocalyptic number.

231304210111 is a deficient number, since it is larger than the sum of its proper divisors (27305875777).

231304210111 is a wasteful number, since it uses less digits than its factorization.

231304210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21911.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 231304210111 its reverse (111012403132), we get a palindrome (342316613243).

The spelling of 231304210111 in words is "two hundred thirty-one billion, three hundred four million, two hundred ten thousand, one hundred eleven".