Base | Representation |
---|---|
bin | 11000100111111110… |
… | …00110010101101111 |
3 | 1021010100011020211120 |
4 | 30103333012111233 |
5 | 204033333210111 |
6 | 10023454552023 |
7 | 645415634250 |
oct | 142377062557 |
9 | 37110136746 |
10 | 13220210031 |
11 | 5674511516 |
12 | 268b508613 |
13 | 1328bb3bb2 |
14 | 8d5accb27 |
15 | 52594e406 |
hex | 313fc656f |
13220210031 has 16 divisors (see below), whose sum is σ = 20146714368. Its totient is φ = 7553793600.
The previous prime is 13220210023. The next prime is 13220210033. The reversal of 13220210031 is 13001202231.
It is not a de Polignac number, because 13220210031 - 23 = 13220210023 is a prime.
It is a super-2 number, since 2×132202100312 (a number of 21 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13220210033) 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, 424296 + ... + 454386.
It is an arithmetic number, because the mean of its divisors is an integer number (1259169648).
Almost surely, 213220210031 is an apocalyptic number.
13220210031 is a deficient number, since it is larger than the sum of its proper divisors (6926504337).
13220210031 is a wasteful number, since it uses less digits than its factorization.
13220210031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 51022.
The product of its (nonzero) digits is 72, while the sum is 15.
Adding to 13220210031 its reverse (13001202231), we get a palindrome (26221412262).
The spelling of 13220210031 in words is "thirteen billion, two hundred twenty million, two hundred ten thousand, thirty-one".
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