3121202000 has 120 divisors (see below), whose sum is σ = 8779516200. Its totient is φ = 1070092800.

The previous prime is 3121201981. The next prime is 3121202003. The reversal of 3121202000 is 2021213.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 136983616 + 2984218384 = 11704^2 + 54628^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121202003) 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 23 ways as a sum of consecutive naturals, for example, 82076 + ... + 113924.

It is an arithmetic number, because the mean of its divisors is an integer number (73162635).

Almost surely, 2^3121202000 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 3121202000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4389758100).

3121202000 is an abundant number, since it is smaller than the sum of its proper divisors (5658314200).

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

3121202000 is a wasteful number, since it uses less digits than its factorization.

3121202000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31886 (or 31863 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 3121202000 is about 55867.7187649541. The cubic root of 3121202000 is about 1461.4163399631.

Adding to 3121202000 its reverse (2021213), we get a palindrome (3123223213).

The spelling of 3121202000 in words is "three billion, one hundred twenty-one million, two hundred two thousand".