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130134221 = 7131191743
BaseRepresentation
bin1111100000110…
…11000011001101
3100001212111120222
413300123003031
5231303243341
620525121125
73140060030
oct760330315
9301774528
10130134221
1167503848
12376b91a5
1320c648c9
14133d7017
15b65844b
hex7c1b0cd

130134221 has 16 divisors (see below), whose sum is σ = 150847488. Its totient is φ = 109964400.

The previous prime is 130134209. The next prime is 130134229. The reversal of 130134221 is 122431031.

It is not a de Polignac number, because 130134221 - 210 = 130133197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 130134221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130134229) 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, 174776 + ... + 175518.

It is an arithmetic number, because the mean of its divisors is an integer number (9427968).

Almost surely, 2130134221 is an apocalyptic number.

It is an amenable number.

130134221 is a deficient number, since it is larger than the sum of its proper divisors (20713267).

130134221 is a wasteful number, since it uses less digits than its factorization.

130134221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 130134221 is about 11407.6387127223. The cubic root of 130134221 is about 506.7539845951.

Adding to 130134221 its reverse (122431031), we get a palindrome (252565252).

The spelling of 130134221 in words is "one hundred thirty million, one hundred thirty-four thousand, two hundred twenty-one".

Divisors: 1 7 131 191 743 917 1337 5201 25021 97333 141913 175147 681331 993391 18590603 130134221