3121163200 has 84 divisors (see below), whose sum is σ = 7726661712. Its totient is φ = 1240883200.

The previous prime is 3121163197. The next prime is 3121163207. The reversal of 3121163200 is 23611213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121163207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 261360 + ... + 273040.

It is an arithmetic number, because the mean of its divisors is an integer number (91984068).

Almost surely, 2^3121163200 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3121163200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3863330856).

3121163200 is an abundant number, since it is smaller than the sum of its proper divisors (4605498512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3121163200 is a wasteful number, since it uses less digits than its factorization.

3121163200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11870 (or 11855 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 3121163200 is about 55867.3715150444. The cubic root of 3121163200 is about 1461.4102842631.

Adding to 3121163200 its reverse (23611213), we get a palindrome (3144774413).

The spelling of 3121163200 in words is "three billion, one hundred twenty-one million, one hundred sixty-three thousand, two hundred".