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130138213 = 1737206897
BaseRepresentation
bin1111100000111…
…00000001100101
3100001212201001211
413300130001211
5231303410323
620525151421
73140104462
oct760340145
9301781054
10130138213
1167506847
12376bb571
1320c6667a
14133d8669
15b65970d
hex7c1c065

130138213 has 8 divisors (see below), whose sum is σ = 141518232. Its totient is φ = 119172096.

The previous prime is 130138199. The next prime is 130138219. The reversal of 130138213 is 312831031.

It can be written as a sum of positive squares in 4 ways, for example, as 51868804 + 78269409 = 7202^2 + 8847^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 130138213 - 29 = 130137701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130138219) 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, 102820 + ... + 104077.

It is an arithmetic number, because the mean of its divisors is an integer number (17689779).

Almost surely, 2130138213 is an apocalyptic number.

It is an amenable number.

130138213 is a deficient number, since it is larger than the sum of its proper divisors (11380019).

130138213 is a wasteful number, since it uses less digits than its factorization.

130138213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206951.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 130138213 is about 11407.8136818586. The cubic root of 130138213 is about 506.7591662739.

Adding to 130138213 its reverse (312831031), we get a palindrome (442969244).

The spelling of 130138213 in words is "one hundred thirty million, one hundred thirty-eight thousand, two hundred thirteen".

Divisors: 1 17 37 629 206897 3517249 7655189 130138213