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104988631 = 1121134517
BaseRepresentation
bin1100100000111…
…11111111010111
321022112222022211
412100133333113
5203334114011
614230134251
72413250206
oct620377727
9238488284
10104988631
1154299570
122b1b1387
131899c367
14dd2d23d
15933cb21
hex641ffd7

104988631 has 8 divisors (see below), whose sum is σ = 114612624. Its totient is φ = 95377920.

The previous prime is 104988581. The next prime is 104988641. The reversal of 104988631 is 136889401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-104988631 is a prime.

It is a super-3 number, since 3×1049886313 (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104988641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20985 + ... + 25501.

It is an arithmetic number, because the mean of its divisors is an integer number (14326578).

Almost surely, 2104988631 is an apocalyptic number.

104988631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

104988631 is a deficient number, since it is larger than the sum of its proper divisors (9623993).

104988631 is a wasteful number, since it uses less digits than its factorization.

104988631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6641.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 104988631 is about 10246.3960005458. The cubic root of 104988631 is about 471.7523702860.

The spelling of 104988631 in words is "one hundred four million, nine hundred eighty-eight thousand, six hundred thirty-one".

Divisors: 1 11 2113 4517 23243 49687 9544421 104988631