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1213230017 is a prime number
BaseRepresentation
bin100100001010000…
…0110101111000001
310010112220110201002
41020110012233001
54441041330032
6320215421345
742031166516
oct11024065701
93115813632
101213230017
1157292273a
1229a384855
131644772ac
14b71b530d
15717a0862
hex48506bc1

1213230017 has 2 divisors, whose sum is σ = 1213230018. Its totient is φ = 1213230016.

The previous prime is 1213229999. The next prime is 1213230019. The reversal of 1213230017 is 7100323121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 729054001 + 484176016 = 27001^2 + 22004^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213230017 - 212 = 1213225921 is a prime.

Together with 1213230019, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1213230019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606615008 + 606615009.

It is an arithmetic number, because the mean of its divisors is an integer number (606615009).

Almost surely, 21213230017 is an apocalyptic number.

It is an amenable number.

1213230017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213230017 is an equidigital number, since it uses as much as digits as its factorization.

1213230017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 1213230017 is about 34831.4515488516. The cubic root of 1213230017 is about 1066.5495798020.

Adding to 1213230017 its reverse (7100323121), we get a palindrome (8313553138).

The spelling of 1213230017 in words is "one billion, two hundred thirteen million, two hundred thirty thousand, seventeen".