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2004316531 = 72231778453
BaseRepresentation
bin111011101110111…
…0111000101110011
312011200110211101121
41313131313011303
513101101112111
6530515243111
7100445260300
oct16735670563
95150424347
102004316531
11939425748
1247b2a9497
1325c329019
141502a00a7
15bae66871
hex77777173

2004316531 has 12 divisors (see below), whose sum is σ = 2432925072. Its totient is φ = 1643289648.

The previous prime is 2004316499. The next prime is 2004316537. The reversal of 2004316531 is 1356134002.

It is not a de Polignac number, because 2004316531 - 25 = 2004316499 is a prime.

It is a super-2 number, since 2×20043165312 = 8034569512879747922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2004316496 and 2004316505.

It is not an unprimeable number, because it can be changed into a prime (2004316537) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 888100 + ... + 890353.

It is an arithmetic number, because the mean of its divisors is an integer number (202743756).

Almost surely, 22004316531 is an apocalyptic number.

2004316531 is a deficient number, since it is larger than the sum of its proper divisors (428608541).

2004316531 is a wasteful number, since it uses less digits than its factorization.

2004316531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778490 (or 1778483 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 2004316531 is about 44769.5938221467. The cubic root of 2004316531 is about 1260.8268132927.

The spelling of 2004316531 in words is "two billion, four million, three hundred sixteen thousand, five hundred thirty-one".

Divisors: 1 7 23 49 161 1127 1778453 12449171 40904419 87144197 286330933 2004316531