2112105031 has 4 divisors (see below), whose sum is σ = 2133017064. Its totient is φ = 2091193000.

The previous prime is 2112105001. The next prime is 2112105043. The reversal of 2112105031 is 1305012112.

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 2112105031 - 2¹⁷ = 2111973959 is a prime.

It is a super-2 number, since 2×2112105031² = 8921975323951021922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2112104996 and 2112105014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112105001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10455865 + ... + 10456066.

It is an arithmetic number, because the mean of its divisors is an integer number (533254266).

Almost surely, 2^2112105031 is an apocalyptic number.

2112105031 is a deficient number, since it is larger than the sum of its proper divisors (20912033).

2112105031 is a wasteful number, since it uses less digits than its factorization.

2112105031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20912032.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 2112105031 is about 45957.6438799902. The cubic root of 2112105031 is about 1283.0349999878.

Adding to 2112105031 its reverse (1305012112), we get a palindrome (3417117143).

The spelling of 2112105031 in words is "two billion, one hundred twelve million, one hundred five thousand, thirty-one".