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1303109261 is a prime number
BaseRepresentation
bin100110110101011…
…1101111010001101
310100211000210211222
41031222331322031
510132043444021
6333150053125
744202150236
oct11552757215
93324023758
101303109261
11609631303
123044aa1a5
13179c8628c
14c50d008d
15796066ab
hex4dabde8d

1303109261 has 2 divisors, whose sum is σ = 1303109262. Its totient is φ = 1303109260.

The previous prime is 1303109239. The next prime is 1303109299. The reversal of 1303109261 is 1629013031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1147109161 + 156000100 = 33869^2 + 12490^2 .

It is a cyclic number.

It is not a de Polignac number, because 1303109261 - 210 = 1303108237 is a prime.

It is a super-2 number, since 2×13031092612 = 3396187492207932242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1303109261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1303109201) 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 as a sum of consecutive naturals, namely, 651554630 + 651554631.

It is an arithmetic number, because the mean of its divisors is an integer number (651554631).

Almost surely, 21303109261 is an apocalyptic number.

It is an amenable number.

1303109261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1303109261 is an equidigital number, since it uses as much as digits as its factorization.

1303109261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 1303109261 is about 36098.6046960267. The cubic root of 1303109261 is about 1092.2622993483.

The spelling of 1303109261 in words is "one billion, three hundred three million, one hundred nine thousand, two hundred sixty-one".