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3013721 is a prime number
BaseRepresentation
bin1011011111110001011001
312200010001022
423133301121
51232414341
6144332225
734421234
oct13376131
95603038
103013721
111779287
121014075
13816989
1458641b
153e7e4b
hex2dfc59

3013721 has 2 divisors, whose sum is σ = 3013722. Its totient is φ = 3013720.

The previous prime is 3013697. The next prime is 3013733. The reversal of 3013721 is 1273103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3013696 + 25 = 1736^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 3013721 - 218 = 2751577 is a prime.

It is a Sophie Germain prime.

It is a Chen 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 3013721.

It is not a weakly prime, because it can be changed into another prime (3013321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1506860 + 1506861.

It is an arithmetic number, because the mean of its divisors is an integer number (1506861).

Almost surely, 23013721 is an apocalyptic number.

It is an amenable number.

3013721 is a deficient number, since it is larger than the sum of its proper divisors (1).

3013721 is an equidigital number, since it uses as much as digits as its factorization.

3013721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 3013721 is about 1736.0072004459. The cubic root of 3013721 is about 144.4445016217. Note that the first 3 decimals are identical.

Adding to 3013721 its reverse (1273103), we get a palindrome (4286824).

The spelling of 3013721 in words is "three million, thirteen thousand, seven hundred twenty-one".