2031213113 has 4 divisors (see below), whose sum is σ = 2031308928. Its totient is φ = 2031117300.

The previous prime is 2031213097. The next prime is 2031213131. The reversal of 2031213113 is 3113121302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3113121302 = 2 ⋅1556560651.

It is a cyclic number.

It is not a de Polignac number, because 2031213113 - 2⁴ = 2031213097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2031213091 and 2031213100.

It is not an unprimeable number, because it can be changed into a prime (2031213143) 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, 413 + ... + 63738.

It is an arithmetic number, because the mean of its divisors is an integer number (507827232).

Almost surely, 2^2031213113 is an apocalyptic number.

It is an amenable number.

2031213113 is a deficient number, since it is larger than the sum of its proper divisors (95815).

2031213113 is an equidigital number, since it uses as much as digits as its factorization.

2031213113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95814.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 2031213113 is about 45068.9817169192. The cubic root of 2031213113 is about 1266.4415885932.

Adding to 2031213113 its reverse (3113121302), we get a palindrome (5144334415).

The spelling of 2031213113 in words is "two billion, thirty-one million, two hundred thirteen thousand, one hundred thirteen".