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130666213 is a prime number
BaseRepresentation
bin1111100100111…
…00111011100101
3100002212112100101
413302130323211
5231422304323
620544344101
73144434026
oct762347345
9302775311
10130666213
1167837507
1237915031
13210bcab2
14134d4c4d
15b710dad
hex7c9cee5

130666213 has 2 divisors, whose sum is σ = 130666214. Its totient is φ = 130666212.

The previous prime is 130666187. The next prime is 130666223. The reversal of 130666213 is 312666031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126180289 + 4485924 = 11233^2 + 2118^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-130666213 is a prime.

It is a super-2 number, since 2×1306662132 = 34147318439522738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130666223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65333106 + 65333107.

It is an arithmetic number, because the mean of its divisors is an integer number (65333107).

Almost surely, 2130666213 is an apocalyptic number.

It is an amenable number.

130666213 is a deficient number, since it is larger than the sum of its proper divisors (1).

130666213 is an equidigital number, since it uses as much as digits as its factorization.

130666213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 130666213 is about 11430.9322891880. The cubic root of 130666213 is about 507.4435867956.

The spelling of 130666213 in words is "one hundred thirty million, six hundred sixty-six thousand, two hundred thirteen".