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2020311320 = 235281179743
BaseRepresentation
bin111100001101011…
…1000000100011000
312012210120110010012
41320122320010120
513114144430240
6532250141052
7101031235316
oct17032700430
95183513105
102020311320
1194745a885
12484721788
132627393b1
141524650b6
15bc575b65
hex786b8118

2020311320 has 32 divisors (see below), whose sum is σ = 4561902720. Its totient is φ = 805244160.

The previous prime is 2020311311. The next prime is 2020311343. The reversal of 2020311320 is 231130202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2020311295 and 2020311304.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 78632 + ... + 101111.

It is an arithmetic number, because the mean of its divisors is an integer number (142559460).

Almost surely, 22020311320 is an apocalyptic number.

2020311320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020311320 is an abundant number, since it is smaller than the sum of its proper divisors (2541591400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2020311320 is a wasteful number, since it uses less digits than its factorization.

2020311320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180035 (or 180031 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 2020311320 is about 44947.8733645987. The cubic root of 2020311320 is about 1264.1718024101.

Adding to 2020311320 its reverse (231130202), we get a palindrome (2251441522).

The spelling of 2020311320 in words is "two billion, twenty million, three hundred eleven thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 281 562 1124 1405 2248 2810 5620 11240 179743 359486 718972 898715 1437944 1797430 3594860 7189720 50507783 101015566 202031132 252538915 404062264 505077830 1010155660 2020311320