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130506361 = 235155511
BaseRepresentation
bin1111100011101…
…01111001111001
3100002120102001221
413301311321321
5231402200421
620541112041
73143200006
oct761657171
9302512057
10130506361
11677383a7
1237858621
13210650cb
14134928ad
15b6cd841
hex7c75e79

130506361 has 4 divisors (see below), whose sum is σ = 130564224. Its totient is φ = 130448500.

The previous prime is 130506319. The next prime is 130506367. The reversal of 130506361 is 163605031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 163605031 = 434937619.

It is a cyclic number.

It is not a de Polignac number, because 130506361 - 211 = 130504313 is a prime.

It is a super-2 number, since 2×1305063612 = 34063820522924642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130506367) 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, 25405 + ... + 30106.

It is an arithmetic number, because the mean of its divisors is an integer number (32641056).

Almost surely, 2130506361 is an apocalyptic number.

It is an amenable number.

130506361 is a deficient number, since it is larger than the sum of its proper divisors (57863).

130506361 is an equidigital number, since it uses as much as digits as its factorization.

130506361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57862.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 130506361 is about 11423.9380688097. The cubic root of 130506361 is about 507.2365733913.

The spelling of 130506361 in words is "one hundred thirty million, five hundred six thousand, three hundred sixty-one".

Divisors: 1 2351 55511 130506361