3121000200 has 192 divisors, whose sum is σ = 11000932800. Its totient is φ = 812851200.

The previous prime is 3121000193. The next prime is 3121000247. The reversal of 3121000200 is 20001213.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 225480 + ... + 238920.

It is an arithmetic number, because the mean of its divisors is an integer number (57296525).

Almost surely, 2^3121000200 is an apocalyptic number.

3121000200 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3121000200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5500466400).

3121000200 is an abundant number, since it is smaller than the sum of its proper divisors (7879932600).

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

3121000200 is a wasteful number, since it uses less digits than its factorization.

3121000200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13509 (or 13494 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 3121000200 is about 55865.9126838540. The cubic root of 3121000200 is about 1461.3848435318.

Adding to 3121000200 its reverse (20001213), we get a palindrome (3141001413).

The spelling of 3121000200 in words is "three billion, one hundred twenty-one million, two hundred", and thus it is an aban number.