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1000130297 = 2229144867
BaseRepresentation
bin111011100111001…
…100011011111001
32120200220212211212
4323213030123321
54022013132142
6243124132505
733532652525
oct7347143371
92520825755
101000130297
11473602771
1223ab37135
1312c28459a
1496b82d85
155cc09d82
hex3b9cc6f9

1000130297 has 4 divisors (see below), whose sum is σ = 1000197456. Its totient is φ = 1000063140.

The previous prime is 1000130293. The next prime is 1000130317. The reversal of 1000130297 is 7920310001.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7920310001 = 31255493871.

It is a cyclic number.

It is not a de Polignac number, because 1000130297 - 22 = 1000130293 is a prime.

It is a super-2 number, since 2×10001302972 = 2000521221954616418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000130293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143 + ... + 44724.

It is an arithmetic number, because the mean of its divisors is an integer number (250049364).

Almost surely, 21000130297 is an apocalyptic number.

It is an amenable number.

1000130297 is a deficient number, since it is larger than the sum of its proper divisors (67159).

1000130297 is an equidigital number, since it uses as much as digits as its factorization.

1000130297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67158.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 1000130297 is about 31624.8367110409. The cubic root of 1000130297 is about 1000.0434304471.

Adding to 1000130297 its reverse (7920310001), we get a palindrome (8920440298).

The spelling of 1000130297 in words is "one billion, one hundred thirty thousand, two hundred ninety-seven".

Divisors: 1 22291 44867 1000130297