| Base | Representation |
|---|---|
| bin | 11101111001010011011110… |
| … | …001011011000100011111000 |
| 3 | 122020112111010112001111111200 |
| 4 | 131321103132023120203320 |
| 5 | 114213142113144010123 |
| 6 | 1143345354313254200 |
| 7 | 36460131231245142 |
| oct | 3571233613304370 |
| 9 | 566474115044450 |
| 10 | 131481266391288 |
| 11 | 3899198a194070 |
| 12 | 128b5b4a104360 |
| 13 | 5849826792408 |
| 14 | 2467a277d5c92 |
| 15 | 10301e1e79143 |
| hex | 7794de2d88f8 |
131481266391288 has 384 divisors, whose sum is σ = 417685035456000. Its totient is φ = 36919290101760.
The previous prime is 131481266391281. The next prime is 131481266391337. The reversal of 131481266391288 is 882193662184131.
It is a happy number.
131481266391288 is a `hidden beast` number, since 1 + 3 + 1 + 4 + 8 + 1 + 266 + 3 + 91 + 288 = 666.
It is a super-4 number, since 4×1314812663912884 (a number of 58 digits) contains 4444 as substring.
It is a nude number because it is divisible by every one of its digits.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131481266391281) by changing a digit.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1694984568 + ... + 1695062136.
It is an arithmetic number, because the mean of its divisors is an integer number (1087721446500).
Almost surely, 2131481266391288 is an apocalyptic number.
131481266391288 is a gapful number since it is divisible by the number (18) 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 131481266391288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208842517728000).
131481266391288 is an abundant number, since it is smaller than the sum of its proper divisors (286203769064712).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
131481266391288 is a wasteful number, since it uses less digits than its factorization.
131481266391288 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 79555 (or 79548 counting only the distinct ones).
The product of its digits is 23887872, while the sum is 63.
The spelling of 131481266391288 in words is "one hundred thirty-one trillion, four hundred eighty-one billion, two hundred sixty-six million, three hundred ninety-one thousand, two hundred eighty-eight".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.121 sec. • engine limits •