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30968083 = 103300661
BaseRepresentation
bin111011000100…
…0100100010011
32011021100020001
41312020210103
530411434313
63023430431
7524136646
oct166104423
964240201
1030968083
1116531863
12a455417
136553813
144181a5d
152abaadd
hex1d88913

30968083 has 4 divisors (see below), whose sum is σ = 31268848. Its totient is φ = 30667320.

The previous prime is 30968057. The next prime is 30968089. The reversal of 30968083 is 38086903.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38086903 = 269141587.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30968083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30968089) 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 in 3 ways as a sum of consecutive naturals, for example, 150228 + ... + 150433.

It is an arithmetic number, because the mean of its divisors is an integer number (7817212).

Almost surely, 230968083 is an apocalyptic number.

30968083 is a deficient number, since it is larger than the sum of its proper divisors (300765).

30968083 is a wasteful number, since it uses less digits than its factorization.

30968083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300764.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 30968083 is about 5564.8973934835. The cubic root of 30968083 is about 314.0302180609.

The spelling of 30968083 in words is "thirty million, nine hundred sixty-eight thousand, eighty-three".

Divisors: 1 103 300661 30968083