3121213203 has 8 divisors (see below), whose sum is σ = 4624019600. Its totient is φ = 2080808784.

The previous prime is 3121213171. The next prime is 3121213211. The reversal of 3121213203 is 3023121213.

It is not a de Polignac number, because 3121213203 - 2⁵ = 3121213171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121213283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57800218 + ... + 57800271.

It is an arithmetic number, because the mean of its divisors is an integer number (578002450).

Almost surely, 2^3121213203 is an apocalyptic number.

3121213203 is a deficient number, since it is larger than the sum of its proper divisors (1502806397).

3121213203 is a wasteful number, since it uses less digits than its factorization.

3121213203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115600498 (or 115600492 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 3121213203 is about 55867.8190284890. The cubic root of 3121213203 is about 1461.4180884591.

Adding to 3121213203 its reverse (3023121213), we get a palindrome (6144334416).

The spelling of 3121213203 in words is "three billion, one hundred twenty-one million, two hundred thirteen thousand, two hundred three".