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8230375381 is a prime number
BaseRepresentation
bin1111010101001000…
…11000111111010101
3210020120220101111211
413222210120333111
5113323434003011
63440405301421
7410646015334
oct75244307725
923216811454
108230375381
113543917928
121718404871
13a121a4207
14581115d1b
15332854b21
hex1ea918fd5

8230375381 has 2 divisors, whose sum is σ = 8230375382. Its totient is φ = 8230375380.

The previous prime is 8230375357. The next prime is 8230375457. The reversal of 8230375381 is 1835730328.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4638291025 + 3592084356 = 68105^2 + 59934^2 .

It is a cyclic number.

It is not a de Polignac number, because 8230375381 - 221 = 8228278229 is a prime.

It is a super-2 number, since 2×82303753812 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8230375781) 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, 4115187690 + 4115187691.

It is an arithmetic number, because the mean of its divisors is an integer number (4115187691).

Almost surely, 28230375381 is an apocalyptic number.

It is an amenable number.

8230375381 is a deficient number, since it is larger than the sum of its proper divisors (1).

8230375381 is an equidigital number, since it uses as much as digits as its factorization.

8230375381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 8230375381 is about 90721.4163304343. The cubic root of 8230375381 is about 2019.0165605499.

The spelling of 8230375381 in words is "eight billion, two hundred thirty million, three hundred seventy-five thousand, three hundred eighty-one".