Base | Representation |
---|---|
bin | 11000011100010011… |
… | …01101110110101111 |
3 | 1020212111222102201101 |
4 | 30032021231312233 |
5 | 203333304030111 |
6 | 10010041023531 |
7 | 643116651646 |
oct | 141611556657 |
9 | 36774872641 |
10 | 13122330031 |
11 | 5624238858 |
12 | 2662784ba7 |
13 | 1311833335 |
14 | 8c6ad035d |
15 | 51c067bc1 |
hex | 30e26ddaf |
13122330031 has 16 divisors (see below), whose sum is σ = 14295600000. Its totient is φ = 11997701856.
The previous prime is 13122329947. The next prime is 13122330059. The reversal of 13122330031 is 13003322131.
It is a cyclic number.
It is not a de Polignac number, because 13122330031 - 211 = 13122327983 is a prime.
It is a super-2 number, since 2×131223300312 (a number of 21 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (19).
It is a junction number, because it is equal to n+sod(n) for n = 13122329990 and 13122330008.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13122330061) 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, 1814140 + ... + 1821358.
It is an arithmetic number, because the mean of its divisors is an integer number (893475000).
Almost surely, 213122330031 is an apocalyptic number.
13122330031 is a deficient number, since it is larger than the sum of its proper divisors (1173269969).
13122330031 is a wasteful number, since it uses less digits than its factorization.
13122330031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 10566.
The product of its (nonzero) digits is 324, while the sum is 19.
Adding to 13122330031 its reverse (13003322131), we get a palindrome (26125652162).
The spelling of 13122330031 in words is "thirteen billion, one hundred twenty-two million, three hundred thirty thousand, thirty-one".
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