2112103031 has 4 divisors (see below), whose sum is σ = 2184934200. Its totient is φ = 2039271864.

The previous prime is 2112103013. The next prime is 2112103039. The reversal of 2112103031 is 1303012112.

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-2112103031 is a prime.

It is a super-2 number, since 2×2112103031² = 8921958427118773922, 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 = 2112102997 and 2112103015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112103039) 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, 36415541 + ... + 36415598.

It is an arithmetic number, because the mean of its divisors is an integer number (546233550).

Almost surely, 2^2112103031 is an apocalyptic number.

2112103031 is a deficient number, since it is larger than the sum of its proper divisors (72831169).

2112103031 is an equidigital number, since it uses as much as digits as its factorization.

2112103031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72831168.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 2112103031 is about 45957.6221208191. The cubic root of 2112103031 is about 1283.0345950094.

Adding to 2112103031 its reverse (1303012112), we get a palindrome (3415115143).

The spelling of 2112103031 in words is "two billion, one hundred twelve million, one hundred three thousand, thirty-one".