3100221000 has 256 divisors, whose sum is σ = 10820160000. Its totient is φ = 821145600.

The previous prime is 3100220989. The next prime is 3100221029. The reversal of 3100221000 is 1220013.

It is a happy number.

It is a super-2 number, since 2×3100221000² = 19222740497682000000, which contains 22 as substring.

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 63 ways as a sum of consecutive naturals, for example, 5372712 + ... + 5373288.

It is an arithmetic number, because the mean of its divisors is an integer number (42266250).

Almost surely, 2^3100221000 is an apocalyptic number.

3100221000 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 3100221000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5410080000).

3100221000 is an abundant number, since it is smaller than the sum of its proper divisors (7719939000).

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

3100221000 is a wasteful number, since it uses less digits than its factorization.

3100221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806 (or 786 counting only the distinct ones).

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

The square root of 3100221000 is about 55679.6282315175. The cubic root of 3100221000 is about 1458.1343844702.

Adding to 3100221000 its reverse (1220013), we get a palindrome (3101441013).

The spelling of 3100221000 in words is "three billion, one hundred million, two hundred twenty-one thousand".