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130623121 = 1743178691
BaseRepresentation
bin1111100100100…
…10011010010001
3100002210100020101
413302102122101
5231414414441
620543412401
73144164266
oct762223221
9302710211
10130623121
11678080a2
12378b4101
13210a62b5
14134c326d
15b703231
hex7c92691

130623121 has 8 divisors (see below), whose sum is σ = 141524064. Its totient is φ = 120079680.

The previous prime is 130623107. The next prime is 130623127. The reversal of 130623121 is 121326031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 130623121 - 213 = 130614929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130623127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88615 + ... + 90076.

It is an arithmetic number, because the mean of its divisors is an integer number (17690508).

Almost surely, 2130623121 is an apocalyptic number.

It is an amenable number.

130623121 is a deficient number, since it is larger than the sum of its proper divisors (10900943).

130623121 is a wasteful number, since it uses less digits than its factorization.

130623121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178751.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 130623121 is about 11429.0472481305. The cubic root of 130623121 is about 507.3877979201.

Adding to 130623121 its reverse (121326031), we get a palindrome (251949152).

The spelling of 130623121 in words is "one hundred thirty million, six hundred twenty-three thousand, one hundred twenty-one".

Divisors: 1 17 43 731 178691 3037747 7683713 130623121