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30122331 = 341244897
BaseRepresentation
bin111001011101…
…0000101011011
32002200101001220
41302322011123
530202403311
62553343123
7514015131
oct162720533
962611056
1030122331
1116004398
12a107aa3
136318885
144001751
1529a0206
hex1cba15b

30122331 has 8 divisors (see below), whose sum is σ = 41142864. Its totient is φ = 19591680.

The previous prime is 30122321. The next prime is 30122333. The reversal of 30122331 is 13322103.

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

It is not a de Polignac number, because 30122331 - 210 = 30121307 is a prime.

It is a super-2 number, since 2×301223312 = 1814709649747122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30122331.

It is not an unprimeable number, because it can be changed into a prime (30122333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122326 + ... + 122571.

It is an arithmetic number, because the mean of its divisors is an integer number (5142858).

Almost surely, 230122331 is an apocalyptic number.

30122331 is a deficient number, since it is larger than the sum of its proper divisors (11020533).

30122331 is a wasteful number, since it uses less digits than its factorization.

30122331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244941.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 30122331 is about 5488.3814554019. The cubic root of 30122331 is about 311.1450232260.

Adding to 30122331 its reverse (13322103), we get a palindrome (43444434).

The spelling of 30122331 in words is "thirty million, one hundred twenty-two thousand, three hundred thirty-one".

Divisors: 1 3 41 123 244897 734691 10040777 30122331