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30681303 = 314237187
BaseRepresentation
bin111010100001…
…0100011010111
32010201202211120
41311002203113
530323300203
63013335023
7521533602
oct165024327
963652746
1030681303
1116356354
12a337473
136483123
144109339
152a60b53
hex1d428d7

30681303 has 8 divisors (see below), whose sum is σ = 40942848. Its totient is φ = 20436984.

The previous prime is 30681293. The next prime is 30681307. The reversal of 30681303 is 30318603.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30681303 - 28 = 30681047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30681307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 676 + ... + 7862.

It is an arithmetic number, because the mean of its divisors is an integer number (5117856).

Almost surely, 230681303 is an apocalyptic number.

30681303 is a deficient number, since it is larger than the sum of its proper divisors (10261545).

30681303 is a wasteful number, since it uses less digits than its factorization.

30681303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8613.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 30681303 is about 5539.0705899095. The cubic root of 30681303 is about 313.0578511475.

Adding to 30681303 its reverse (30318603), we get a palindrome (60999906).

It can be divided in two parts, 3068 and 1303, that added together give a triangular number (4371 = T93).

The spelling of 30681303 in words is "thirty million, six hundred eighty-one thousand, three hundred three".

Divisors: 1 3 1423 4269 7187 21561 10227101 30681303