3121013212 has 12 divisors (see below), whose sum is σ = 5492287080. Its totient is φ = 1551788336.

The previous prime is 3121013209. The next prime is 3121013213. The reversal of 3121013212 is 2123101213.

3121013212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121013213) 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, 2178763 + ... + 2180194.

It is an arithmetic number, because the mean of its divisors is an integer number (457690590).

Almost surely, 2^3121013212 is an apocalyptic number.

It is an amenable number.

3121013212 is a deficient number, since it is larger than the sum of its proper divisors (2371273868).

3121013212 is a wasteful number, since it uses less digits than its factorization.

3121013212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4359140 (or 4359138 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 3121013212 is about 55866.0291411516. The cubic root of 3121013212 is about 1461.3868744526.

Adding to 3121013212 its reverse (2123101213), we get a palindrome (5244114425).

The spelling of 3121013212 in words is "three billion, one hundred twenty-one million, thirteen thousand, two hundred twelve".