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2148808031 = 63115432207
BaseRepresentation
bin1000000000010100…
…0011010101011111
312112202100202110122
42000011003111133
513400043324111
6553120225155
7104151365306
oct20005032537
95482322418
102148808031
11a02a45307
124bb76b1bb
13283249856
1416555343d
15c89a8cdb
hex8014355f

2148808031 has 8 divisors (see below), whose sum is σ = 2154584064. Its totient is φ = 2143040760.

The previous prime is 2148808019. The next prime is 2148808033. The reversal of 2148808031 is 1308088412.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2148808031 is a prime.

It is a super-2 number, since 2×21488080312 = 9234751908180193922, 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 = 2148807982 and 2148808000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2148808033) by changing a digit.

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, 972530 + ... + 974736.

It is an arithmetic number, because the mean of its divisors is an integer number (269323008).

Almost surely, 22148808031 is an apocalyptic number.

2148808031 is a deficient number, since it is larger than the sum of its proper divisors (5776033).

2148808031 is a wasteful number, since it uses less digits than its factorization.

2148808031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4381.

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 2148808031 is about 46355.2373632150. The cubic root of 2148808031 is about 1290.4243202810.

The spelling of 2148808031 in words is "two billion, one hundred forty-eight million, eight hundred eight thousand, thirty-one".

Divisors: 1 631 1543 2207 973633 1392617 3405401 2148808031