2111111230231 has 4 divisors (see below), whose sum is σ = 2235294243792. Its totient is φ = 1986928216672.

The previous prime is 2111111230223. The next prime is 2111111230279. The reversal of 2111111230231 is 1320321111112.

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 2111111230231 - 2³ = 2111111230223 is a prime.

It is a super-2 number, since 2×2111111230231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2111111230199 and 2111111230208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111111230831) 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, 62091506755 + ... + 62091506788.

It is an arithmetic number, because the mean of its divisors is an integer number (558823560948).

Almost surely, 2^{2111111230231} is an apocalyptic number.

2111111230231 is a deficient number, since it is larger than the sum of its proper divisors (124183013561).

2111111230231 is a wasteful number, since it uses less digits than its factorization.

2111111230231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124183013560.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 2111111230231 its reverse (1320321111112), we get a palindrome (3431432341343).

The spelling of 2111111230231 in words is "two trillion, one hundred eleven billion, one hundred eleven million, two hundred thirty thousand, two hundred thirty-one".