Base | Representation |
---|---|
bin | 111101011101000001… |
… | …0010100010010100110 |
3 | 110121122020012012002120 |
4 | 1322322002110102212 |
5 | 4130233332012304 |
6 | 140343135050410 |
7 | 12351226044006 |
oct | 1727202242246 |
9 | 417566165076 |
10 | 131970188454 |
11 | 50a71804955 |
12 | 216b0670a06 |
13 | c5a2111910 |
14 | 655d004006 |
15 | 3675cd80d9 |
hex | 1eba0944a6 |
131970188454 has 64 divisors (see below), whose sum is σ = 302810586624. Its totient is φ = 37983085056.
The previous prime is 131970188453. The next prime is 131970188461. The reversal of 131970188454 is 454881079131.
131970188454 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a super-2 number, since 2×1319701884542 (a number of 23 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (51).
It is a junction number, because it is equal to n+sod(n) for n = 131970188397 and 131970188406.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131970188453) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89154 + ... + 521429.
It is an arithmetic number, because the mean of its divisors is an integer number (4731415416).
Almost surely, 2131970188454 is an apocalyptic number.
131970188454 is an abundant number, since it is smaller than the sum of its proper divisors (170840398170).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
131970188454 is a wasteful number, since it uses less digits than its factorization.
131970188454 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 610781.
The product of its (nonzero) digits is 967680, while the sum is 51.
The spelling of 131970188454 in words is "one hundred thirty-one billion, nine hundred seventy million, one hundred eighty-eight thousand, four hundred fifty-four".
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