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2143102215 = 35142873481
BaseRepresentation
bin111111110111101…
…0010010100000111
312112100121212120010
41333233102110013
513342113232330
6552354041303
7104052032262
oct17757222407
95470555503
102143102215
119aa7a8461
124b9879233
13281ccc727
141648a9cd9
15c822d3b0
hex7fbd2507

2143102215 has 8 divisors (see below), whose sum is σ = 3428963568. Its totient is φ = 1142987840.

The previous prime is 2143102201. The next prime is 2143102219. The reversal of 2143102215 is 5122013412.

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

It is not a de Polignac number, because 2143102215 - 215 = 2143069447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2143102191 and 2143102200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143102219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71436726 + ... + 71436755.

It is an arithmetic number, because the mean of its divisors is an integer number (428620446).

Almost surely, 22143102215 is an apocalyptic number.

2143102215 is a deficient number, since it is larger than the sum of its proper divisors (1285861353).

2143102215 is a wasteful number, since it uses less digits than its factorization.

2143102215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142873489.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 2143102215 is about 46293.6519946310. The cubic root of 2143102215 is about 1289.2811360474.

Adding to 2143102215 its reverse (5122013412), we get a palindrome (7265115627).

The spelling of 2143102215 in words is "two billion, one hundred forty-three million, one hundred two thousand, two hundred fifteen".

Divisors: 1 3 5 15 142873481 428620443 714367405 2143102215