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2102132013 = 31943857663
BaseRepresentation
bin111110101001011…
…1111110100101101
312102111112101000020
41331102333310231
513301121211023
6544331552353
7103043553522
oct17522776455
95374471006
102102132013
11989664993
124a7bbb6b9
132766863c7
1415d283149
15c4838de3
hex7d4bfd2d

2102132013 has 16 divisors (see below), whose sum is σ = 3018977280. Its totient is φ = 1296784944.

The previous prime is 2102131987. The next prime is 2102132027. The reversal of 2102132013 is 3102312012.

It is not a de Polignac number, because 2102132013 - 29 = 2102131501 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2102131983 and 2102132001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102132083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 426381 + ... + 431282.

It is an arithmetic number, because the mean of its divisors is an integer number (188686080).

Almost surely, 22102132013 is an apocalyptic number.

It is an amenable number.

2102132013 is a deficient number, since it is larger than the sum of its proper divisors (916845267).

2102132013 is a wasteful number, since it uses less digits than its factorization.

2102132013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857728.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2102132013 is about 45849.0132172984. The cubic root of 2102132013 is about 1281.0123853056.

Adding to 2102132013 its reverse (3102312012), we get a palindrome (5204444025).

It can be divided in two parts, 210213 and 2013, that added together give a triangular number (212226 = T651).

The spelling of 2102132013 in words is "two billion, one hundred two million, one hundred thirty-two thousand, thirteen".

Divisors: 1 3 19 43 57 129 817 2451 857663 2572989 16295597 36879509 48886791 110638527 700710671 2102132013