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130223120321 = 718603302903
BaseRepresentation
bin111100101000111100…
…1110001111111000001
3110110010110202221011102
41321101321301333001
54113144104322241
6135453525224145
712260023154630
oct1712171617701
9413113687142
10130223120321
1150255613798
12212a3562055
13c3841955a8
146434d89517
1535c273839b
hex1e51e71fc1

130223120321 has 4 divisors (see below), whose sum is σ = 148826423232. Its totient is φ = 111619817412.

The previous prime is 130223120309. The next prime is 130223120381. The reversal of 130223120321 is 123021322031.

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: 123021322031 = 163754732037.

It is a cyclic number.

It is not a de Polignac number, because 130223120321 - 222 = 130218926017 is a prime.

It is a super-2 number, since 2×1302231203212 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 130223120293 and 130223120302.

It is not an unprimeable number, because it can be changed into a prime (130223120381) 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, 9301651445 + ... + 9301651458.

It is an arithmetic number, because the mean of its divisors is an integer number (37206605808).

Almost surely, 2130223120321 is an apocalyptic number.

It is an amenable number.

130223120321 is a deficient number, since it is larger than the sum of its proper divisors (18603302911).

130223120321 is an equidigital number, since it uses as much as digits as its factorization.

130223120321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18603302910.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 130223120321 its reverse (123021322031), we get a palindrome (253244442352).

The spelling of 130223120321 in words is "one hundred thirty billion, two hundred twenty-three million, one hundred twenty thousand, three hundred twenty-one".

Divisors: 1 7 18603302903 130223120321