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30512245315 = 515787386549
BaseRepresentation
bin11100011010101010…
…111110101001000011
32220202110011122211211
4130122222332221003
5444442113322230
622003411150551
72130056543266
oct343252765103
986673148754
1030512245315
1111a38404572
125ab65a5457
132b53546a36
1416964aacdd
15bd8ab042a
hex71aabea43

30512245315 has 8 divisors (see below), whose sum is σ = 36617108400. Its totient is φ = 24408186912.

The previous prime is 30512245301. The next prime is 30512245333. The reversal of 30512245315 is 51354221503.

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 30512245315 - 29 = 30512244803 is a prime.

It is a super-2 number, since 2×305122453152 (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114340 + ... + 272209.

It is an arithmetic number, because the mean of its divisors is an integer number (4577138550).

Almost surely, 230512245315 is an apocalyptic number.

30512245315 is a deficient number, since it is larger than the sum of its proper divisors (6104863085).

30512245315 is a wasteful number, since it uses less digits than its factorization.

30512245315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402341.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 30512245315 its reverse (51354221503), we get a palindrome (81866466818).

The spelling of 30512245315 in words is "thirty billion, five hundred twelve million, two hundred forty-five thousand, three hundred fifteen".

Divisors: 1 5 15787 78935 386549 1932745 6102449063 30512245315