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30245331 = 341245897
BaseRepresentation
bin111001101100…
…0000111010011
32002220121210110
41303120013103
530220322311
63000132403
7515036544
oct163300723
962817713
1030245331
1116088846
12a167103
13635c85c
1440344cb
1529c68a6
hex1cd81d3

30245331 has 8 divisors (see below), whose sum is σ = 41310864. Its totient is φ = 19671680.

The previous prime is 30245291. The next prime is 30245339. The reversal of 30245331 is 13354203.

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

It is a cyclic number.

It is not a de Polignac number, because 30245331 - 213 = 30237139 is a prime.

It is a super-2 number, since 2×302453312 = 1829560094599122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30245298 and 30245307.

It is not an unprimeable number, because it can be changed into a prime (30245339) 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, 122826 + ... + 123071.

It is an arithmetic number, because the mean of its divisors is an integer number (5163858).

Almost surely, 230245331 is an apocalyptic number.

30245331 is a deficient number, since it is larger than the sum of its proper divisors (11065533).

30245331 is a wasteful number, since it uses less digits than its factorization.

30245331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245941.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 30245331 is about 5499.5755290749. The cubic root of 30245331 is about 311.5679526981.

Adding to 30245331 its reverse (13354203), we get a palindrome (43599534).

The spelling of 30245331 in words is "thirty million, two hundred forty-five thousand, three hundred thirty-one".

Divisors: 1 3 41 123 245897 737691 10081777 30245331