Base | Representation |
---|---|
bin | 11000011101010110… |
… | …01101101100101010 |
3 | 1020220010111120020020 |
4 | 30032223031230222 |
5 | 203343031024320 |
6 | 10010553141310 |
7 | 643254414030 |
oct | 141653155452 |
9 | 36803446206 |
10 | 13131111210 |
11 | 5629196228 |
12 | 26656ba836 |
13 | 13135b91b9 |
14 | 8c7d38550 |
15 | 51cbee940 |
hex | 30eacdb2a |
13131111210 has 32 divisors (see below), whose sum is σ = 36016762752. Its totient is φ = 3001396800.
The previous prime is 13131111209. The next prime is 13131111211. The reversal of 13131111210 is 1211113131.
It is an interprime number because it is at equal distance from previous prime (13131111209) and next prime (13131111211).
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 13131111210.
It is not an unprimeable number, because it can be changed into a prime (13131111211) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31264341 + ... + 31264760.
It is an arithmetic number, because the mean of its divisors is an integer number (1125523836).
Almost surely, 213131111210 is an apocalyptic number.
13131111210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
13131111210 is an abundant number, since it is smaller than the sum of its proper divisors (22885651542).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13131111210 is a wasteful number, since it uses less digits than its factorization.
13131111210 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 62529118.
The product of its (nonzero) digits is 18, while the sum is 15.
Adding to 13131111210 its reverse (1211113131), we get a palindrome (14342224341).
The spelling of 13131111210 in words is "thirteen billion, one hundred thirty-one million, one hundred eleven thousand, two hundred ten".
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