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30131302 = 219792929
BaseRepresentation
bin111001011110…
…0010001100110
32002200211101011
41302330101212
530203200202
62553452434
7514053235
oct162742146
962624334
1030131302
1116010103
12a11111a
13631c996
144004b1c
1529a2bd7
hex1cbc466

30131302 has 8 divisors (see below), whose sum is σ = 47575800. Its totient is φ = 14272704.

The previous prime is 30131291. The next prime is 30131303. The reversal of 30131302 is 20313103.

30131302 is nontrivially palindromic in base 12.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30131303) 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 3 ways as a sum of consecutive naturals, for example, 396427 + ... + 396502.

It is an arithmetic number, because the mean of its divisors is an integer number (5946975).

Almost surely, 230131302 is an apocalyptic number.

30131302 is a deficient number, since it is larger than the sum of its proper divisors (17444498).

30131302 is a wasteful number, since it uses less digits than its factorization.

30131302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792950.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 30131302 is about 5489.1986664722. The cubic root of 30131302 is about 311.1759084515.

Adding to 30131302 its reverse (20313103), we get a palindrome (50444405).

The spelling of 30131302 in words is "thirty million, one hundred thirty-one thousand, three hundred two".

Divisors: 1 2 19 38 792929 1585858 15065651 30131302