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130124213 = 197660529
BaseRepresentation
bin1111100000110…
…00100110110101
3100001211222212022
413300120212311
5231302433323
620525002525
73140015612
oct760304665
9301758768
10130124213
11674a727a
12376b3445
1320c6019b
14133d3509
15b6554c8
hex7c189b5

130124213 has 4 divisors (see below), whose sum is σ = 130784940. Its totient is φ = 129463488.

The previous prime is 130124167. The next prime is 130124231. The reversal of 130124213 is 312421031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 94148209 + 35976004 = 9703^2 + 5998^2 .

It is a cyclic number.

It is not a de Polignac number, because 130124213 - 214 = 130107829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130124191 and 130124200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130124243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330068 + ... + 330461.

It is an arithmetic number, because the mean of its divisors is an integer number (32696235).

Almost surely, 2130124213 is an apocalyptic number.

It is an amenable number.

130124213 is a deficient number, since it is larger than the sum of its proper divisors (660727).

130124213 is an equidigital number, since it uses as much as digits as its factorization.

130124213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660726.

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

The square root of 130124213 is about 11407.2000508451. The cubic root of 130124213 is about 506.7409935876.

Adding to 130124213 its reverse (312421031), we get a palindrome (442545244).

The spelling of 130124213 in words is "one hundred thirty million, one hundred twenty-four thousand, two hundred thirteen".

Divisors: 1 197 660529 130124213