Base | Representation |
---|---|
bin | 10110100110001011… |
… | …10100100011000100 |
3 | 1011022110110200010200 |
4 | 23103011310203010 |
5 | 144321122444444 |
6 | 5323443050500 |
7 | 606425436000 |
oct | 132305644304 |
9 | 34273420120 |
10 | 12131453124 |
11 | 516598631a |
12 | 2426970a30 |
13 | 11b446b83b |
14 | 831279700 |
15 | 4b0089969 |
hex | 2d31748c4 |
12131453124 has 144 divisors (see below), whose sum is σ = 35948640000. Its totient is φ = 3448013184.
The previous prime is 12131453123. The next prime is 12131453137. The reversal of 12131453124 is 42135413121.
12131453124 is a `hidden beast` number, since 121 + 3 + 1 + 4 + 531 + 2 + 4 = 666.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12131453123) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2454784 + ... + 2459720.
Almost surely, 212131453124 is an apocalyptic number.
12131453124 is a gapful number since it is divisible by the number (14) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 12131453124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17974320000).
12131453124 is an abundant number, since it is smaller than the sum of its proper divisors (23817186876).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12131453124 is a wasteful number, since it uses less digits than its factorization.
12131453124 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5167 (or 5148 counting only the distinct ones).
The product of its digits is 2880, while the sum is 27.
Adding to 12131453124 its reverse (42135413121), we get a palindrome (54266866245).
The spelling of 12131453124 in words is "twelve billion, one hundred thirty-one million, four hundred fifty-three thousand, one hundred twenty-four".
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