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3100013000020 = 2251011798573519
BaseRepresentation
bin101101000111000111001…
…011000111010101010100
3101222100200020101002101001
4231013013023013111110
5401242311312000040
610332043141113044
7436653132505366
oct55070713072524
911870606332331
103100013000020
11a957875809a2
124209780b8784
13196439c41861
14aa08197cd36
1555989b9a59a
hex2d1c72c7554

3100013000020 has 48 divisors (see below), whose sum is σ = 6611212742400. Its totient is φ = 1220868963200.

The previous prime is 3100013000017. The next prime is 3100013000047. The reversal of 3100013000020 is 200003100013.

3100013000020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×31000130000202 (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 3100012999970 and 3100013000006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3925180 + ... + 4648339.

It is an arithmetic number, because the mean of its divisors is an integer number (137733598800).

Almost surely, 23100013000020 is an apocalyptic number.

It is an amenable number.

3100013000020 is an abundant number, since it is smaller than the sum of its proper divisors (3511199742380).

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

3100013000020 is a wasteful number, since it uses less digits than its factorization.

3100013000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8573808 (or 8573806 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

Adding to 3100013000020 its reverse (200003100013), we get a palindrome (3300016100033).

The spelling of 3100013000020 in words is "three trillion, one hundred billion, thirteen million, twenty", and thus it is an aban number.

Divisors: 1 2 4 5 10 20 101 179 202 358 404 505 716 895 1010 1790 2020 3580 18079 36158 72316 90395 180790 361580 8573519 17147038 34294076 42867595 85735190 171470380 865925419 1534659901 1731850838 3069319802 3463701676 4329627095 6138639604 7673299505 8659254190 15346599010 17318508380 30693198020 155000650001 310001300002 620002600004 775003250005 1550006500010 3100013000020