231102100111 has 4 divisors (see below), whose sum is σ = 244696341312. Its totient is φ = 217507858912.

The previous prime is 231102100109. The next prime is 231102100153. The reversal of 231102100111 is 111001201132.

It is a happy number.

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

It is not a de Polignac number, because 231102100111 - 2¹ = 231102100109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231102100091 and 231102100100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231102100181) 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, 6797120575 + ... + 6797120608.

It is an arithmetic number, because the mean of its divisors is an integer number (61174085328).

Almost surely, 2^231102100111 is an apocalyptic number.

231102100111 is a deficient number, since it is larger than the sum of its proper divisors (13594241201).

231102100111 is a wasteful number, since it uses less digits than its factorization.

231102100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13594241200.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 231102100111 its reverse (111001201132), we get a palindrome (342103301243).

The spelling of 231102100111 in words is "two hundred thirty-one billion, one hundred two million, one hundred thousand, one hundred eleven".