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30982691 is a prime number
BaseRepresentation
bin111011000110…
…0001000100011
32011022002021002
41312030020203
530412421231
63024022215
7524230355
oct166141043
964262232
1030982691
1116541833
12a46196b
13655a36c
1441870d5
152ac00cb
hex1d8c223

30982691 has 2 divisors, whose sum is σ = 30982692. Its totient is φ = 30982690.

The previous prime is 30982681. The next prime is 30982697. The reversal of 30982691 is 19628903.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30982691 - 222 = 26788387 is a prime.

It is equal to p1914995 and since 30982691 and 1914995 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (30982697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15491345 + 15491346.

It is an arithmetic number, because the mean of its divisors is an integer number (15491346).

Almost surely, 230982691 is an apocalyptic number.

30982691 is a deficient number, since it is larger than the sum of its proper divisors (1).

30982691 is an equidigital number, since it uses as much as digits as its factorization.

30982691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 30982691 is about 5566.2097517072. The cubic root of 30982691 is about 314.0795875178.

The spelling of 30982691 in words is "thirty million, nine hundred eighty-two thousand, six hundred ninety-one".