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80407213 is a prime number
BaseRepresentation
bin1001100101011…
…10101010101101
312121022002221221
410302232222231
5131041012323
611551223341
71664310235
oct462565255
9177262857
1080407213
114142a147
1222b17b51
1313873843
14a970cc5
1570d455d
hex4caeaad

80407213 has 2 divisors, whose sum is σ = 80407214. Its totient is φ = 80407212.

The previous prime is 80407199. The next prime is 80407231. The reversal of 80407213 is 31270408.

Together with next prime (80407231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66292164 + 14115049 = 8142^2 + 3757^2 .

It is a cyclic number.

It is not a de Polignac number, because 80407213 - 25 = 80407181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80407813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40203606 + 40203607.

It is an arithmetic number, because the mean of its divisors is an integer number (40203607).

Almost surely, 280407213 is an apocalyptic number.

It is an amenable number.

80407213 is a deficient number, since it is larger than the sum of its proper divisors (1).

80407213 is an equidigital number, since it uses as much as digits as its factorization.

80407213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 80407213 is about 8967.0069142384. The cubic root of 80407213 is about 431.6167958831.

The spelling of 80407213 in words is "eighty million, four hundred seven thousand, two hundred thirteen".