2031213105 has 40 divisors (see below), whose sum is σ = 3645240192. Its totient is φ = 1082093472.

The previous prime is 2031213097. The next prime is 2031213131. The reversal of 2031213105 is 5013121302.

It is not a de Polignac number, because 2031213105 - 2³ = 2031213097 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 444442 + ... + 448988.

Almost surely, 2^2031213105 is an apocalyptic number.

It is an amenable number.

2031213105 is a deficient number, since it is larger than the sum of its proper divisors (1614027087).

2031213105 is a wasteful number, since it uses less digits than its factorization.

2031213105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5667 (or 5658 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 2031213105 is about 45068.9816281664. The cubic root of 2031213105 is about 1266.4415869306.

Adding to 2031213105 its reverse (5013121302), we get a palindrome (7044334407).

The spelling of 2031213105 in words is "two billion, thirty-one million, two hundred thirteen thousand, one hundred five".