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3131002012200 = 233525218336687
BaseRepresentation
bin101101100011111110010…
…000110100001000101000
3102002022122220200000101220
4231203332100310020220
5402244243003342300
610354210143142040
7442131101662566
oct55437620641050
912068586600356
103131002012200
11aa793a013467
124269862a4920
1319933819775a
14ab7814b4a36
15566a0534da0
hex2d8fe434228

3131002012200 has 48 divisors (see below), whose sum is σ = 9706106239680. Its totient is φ = 834933869760.

The previous prime is 3131002012097. The next prime is 3131002012213. The reversal of 3131002012200 is 22102001313.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 3131002012200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2609167744 + ... + 2609168943.

It is an arithmetic number, because the mean of its divisors is an integer number (202210546660).

Almost surely, 23131002012200 is an apocalyptic number.

3131002012200 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3131002012200 is an abundant number, since it is smaller than the sum of its proper divisors (6575104227480).

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

3131002012200 is a wasteful number, since it uses less digits than its factorization.

3131002012200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5218336706 (or 5218336697 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 3131002012200 its reverse (22102001313), we get a palindrome (3153104013513).

The spelling of 3131002012200 in words is "three trillion, one hundred thirty-one billion, two million, twelve thousand, two hundred".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 25 30 40 50 60 75 100 120 150 200 300 600 5218336687 10436673374 15655010061 20873346748 26091683435 31310020122 41746693496 52183366870 62620040244 78275050305 104366733740 125240080488 130458417175 156550100610 208733467480 260916834350 313100201220 391375251525 521833668700 626200402440 782750503050 1043667337400 1565501006100 3131002012200