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30662141 is a prime number
BaseRepresentation
bin111010011110…
…1110111111101
32010200210112212
41310331313331
530322142031
63013110205
7521423666
oct164756775
963623485
1030662141
1116342a14
12a328365
1364774a3
14410236d
152a5a12b
hex1d3ddfd

30662141 has 2 divisors, whose sum is σ = 30662142. Its totient is φ = 30662140.

The previous prime is 30662113. The next prime is 30662153. The reversal of 30662141 is 14126603.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29474041 + 1188100 = 5429^2 + 1090^2 .

It is an emirp because it is prime and its reverse (14126603) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30662141 - 214 = 30645757 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30662161) 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, 15331070 + 15331071.

It is an arithmetic number, because the mean of its divisors is an integer number (15331071).

Almost surely, 230662141 is an apocalyptic number.

It is an amenable number.

30662141 is a deficient number, since it is larger than the sum of its proper divisors (1).

30662141 is an equidigital number, since it uses as much as digits as its factorization.

30662141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 30662141 is about 5537.3406071868. The cubic root of 30662141 is about 312.9926641743.

Adding to 30662141 its reverse (14126603), we get a palindrome (44788744).

It can be divided in two parts, 30662 and 141, that added together give a palindrome (30803).

The spelling of 30662141 in words is "thirty million, six hundred sixty-two thousand, one hundred forty-one".