Base | Representation |
---|---|
bin | 101101100100110011000… |
… | …111100110001001110000 |
3 | 102002101221201021220020000 |
4 | 231210303013212021300 |
5 | 402303102012204310 |
6 | 10354434141550000 |
7 | 442162060313163 |
oct | 55446307461160 |
9 | 12071851256200 |
10 | 3131888788080 |
11 | aa8254633298 |
12 | 426b93275300 |
13 | 199449b10c00 |
14 | ab82718bada |
15 | 567032ed4c0 |
hex | 2d9331e6270 |
3131888788080 has 600 divisors, whose sum is σ = 12471543078192. Its totient is φ = 725573541888.
The previous prime is 3131888788051. The next prime is 3131888788081. The reversal of 3131888788080 is 808878881313.
It is a super-2 number, since 2×31318887880802 (a number of 26 digits) contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 3131888787999 and 3131888788017.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (3131888788081) by changing a digit.
It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 18532927 + ... + 18701153.
Almost surely, 23131888788080 is an apocalyptic number.
3131888788080 is a gapful number since it is divisible by the number (30) 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 3131888788080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6235771539096).
3131888788080 is an abundant number, since it is smaller than the sum of its proper divisors (9339654290112).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
3131888788080 is a wasteful number, since it uses less digits than its factorization.
3131888788080 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 168295 (or 168267 counting only the distinct ones).
The product of its (nonzero) digits is 16515072, while the sum is 63.
The spelling of 3131888788080 in words is "three trillion, one hundred thirty-one billion, eight hundred eighty-eight million, seven hundred eighty-eight thousand, eighty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.071 sec. • engine limits •