3112103213 has 4 divisors (see below), whose sum is σ = 3112246368. Its totient is φ = 3111960060.

The previous prime is 3112103209. The next prime is 3112103219. The reversal of 3112103213 is 3123012113.

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 an emirpimes, since its reverse is a distinct semiprime: 3123012113 = 13 ⋅240231701.

It is a cyclic number.

It is not a de Polignac number, because 3112103213 - 2² = 3112103209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3112103191 and 3112103200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3112103219) 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, 31481 + ... + 84942.

It is an arithmetic number, because the mean of its divisors is an integer number (778061592).

Almost surely, 2^3112103213 is an apocalyptic number.

It is an amenable number.

3112103213 is a deficient number, since it is larger than the sum of its proper divisors (143155).

3112103213 is a wasteful number, since it uses less digits than its factorization.

3112103213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143154.

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

The square root of 3112103213 is about 55786.2278075871. The cubic root of 3112103213 is about 1459.9948728474.

Adding to 3112103213 its reverse (3123012113), we get a palindrome (6235115326).

The spelling of 3112103213 in words is "three billion, one hundred twelve million, one hundred three thousand, two hundred thirteen".