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130221323 = 349373127
BaseRepresentation
bin1111100001100…
…00010100001011
3100002000221001222
413300300110023
5231314040243
620531032255
73140602001
oct760602413
9302027058
10130221323
1167563231
123773b68b
1320c9544b
141341aa71
15b674168
hex7c3050b

130221323 has 4 divisors (see below), whose sum is σ = 130594800. Its totient is φ = 129847848.

The previous prime is 130221277. The next prime is 130221341. The reversal of 130221323 is 323122031.

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

It is a cyclic number.

It is not a de Polignac number, because 130221323 - 214 = 130204939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130221353) 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, 186215 + ... + 186912.

It is an arithmetic number, because the mean of its divisors is an integer number (32648700).

Almost surely, 2130221323 is an apocalyptic number.

130221323 is a deficient number, since it is larger than the sum of its proper divisors (373477).

130221323 is an equidigital number, since it uses as much as digits as its factorization.

130221323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373476.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 130221323 is about 11411.4557791721. The cubic root of 130221323 is about 506.8670203030.

Adding to 130221323 its reverse (323122031), we get a palindrome (453343354).

The spelling of 130221323 in words is "one hundred thirty million, two hundred twenty-one thousand, three hundred twenty-three".

Divisors: 1 349 373127 130221323