| Base | Representation |
|---|---|
| bin | 111101000000011010… |
| … | …0010001001100000100 |
| 3 | 110112011022210221120100 |
| 4 | 1322000310101030010 |
| 5 | 4121302103020140 |
| 6 | 140104003204100 |
| 7 | 12315361235514 |
| oct | 1720064211404 |
| 9 | 415138727510 |
| 10 | 131010204420 |
| 11 | 50619932717 |
| 12 | 21483076630 |
| 13 | c47b275624 |
| 14 | 64ab711844 |
| 15 | 361b8ad530 |
| hex | 1e80d11304 |
131010204420 has 144 divisors (see below), whose sum is σ = 410240742912. Its totient is φ = 33821383680.
The previous prime is 131010204419. The next prime is 131010204427. The reversal of 131010204420 is 24402010131.
131010204420 is a `hidden beast` number, since 1 + 31 + 0 + 10 + 204 + 420 = 666.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 131010204393 and 131010204402.
It is not an unprimeable number, because it can be changed into a prime (131010204427) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 799725 + ... + 949515.
It is an arithmetic number, because the mean of its divisors is an integer number (2848894048).
Almost surely, 2131010204420 is an apocalyptic number.
131010204420 is a gapful number since it is divisible by the number (10) 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 131010204420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205120371456).
131010204420 is an abundant number, since it is smaller than the sum of its proper divisors (279230538492).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
131010204420 is a wasteful number, since it uses less digits than its factorization.
131010204420 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 149962 (or 149957 counting only the distinct ones).
The product of its (nonzero) digits is 192, while the sum is 18.
Adding to 131010204420 its reverse (24402010131), we get a palindrome (155412214551).
The spelling of 131010204420 in words is "one hundred thirty-one billion, ten million, two hundred four thousand, four hundred twenty".
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