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130655321 = 290345007
BaseRepresentation
bin1111100100110…
…10010001011001
3100002211222101222
413302122101121
5231421432241
620544221425
73144360206
oct762322131
9302758358
10130655321
116782a305
123790a875
13210b7b54
14134d0cad
15b70ca4b
hex7c9a459

130655321 has 4 divisors (see below), whose sum is σ = 130703232. Its totient is φ = 130607412.

The previous prime is 130655279. The next prime is 130655377. The reversal of 130655321 is 123556031.

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: 123556031 = 196502949.

It is a cyclic number.

It is not a de Polignac number, because 130655321 - 26 = 130655257 is a prime.

It is a super-2 number, since 2×1306553212 = 34141625811226082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130655221) 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, 19601 + ... + 25406.

It is an arithmetic number, because the mean of its divisors is an integer number (32675808).

Almost surely, 2130655321 is an apocalyptic number.

It is an amenable number.

130655321 is a deficient number, since it is larger than the sum of its proper divisors (47911).

130655321 is an equidigital number, since it uses as much as digits as its factorization.

130655321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47910.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 130655321 is about 11430.4558526771. The cubic root of 130655321 is about 507.4294866724.

The spelling of 130655321 in words is "one hundred thirty million, six hundred fifty-five thousand, three hundred twenty-one".

Divisors: 1 2903 45007 130655321