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30512122153 = 1311991170437
BaseRepresentation
bin11100011010101010…
…100000100100101001
32220202102221101220021
4130122222200210221
5444442100402103
622003404400441
72130055521232
oct343252404451
986672841807
1030512122153
1111a3832aa87
125ab6546121
132b53502966
141696478089
15bd8a88bbd
hex71aaa0929

30512122153 has 8 divisors (see below), whose sum is σ = 30899563200. Its totient is φ = 30127022640.

The previous prime is 30512122111. The next prime is 30512122159. The reversal of 30512122153 is 35122121503.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30512122153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30512122159) 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, 559150 + ... + 611287.

It is an arithmetic number, because the mean of its divisors is an integer number (3862445400).

Almost surely, 230512122153 is an apocalyptic number.

It is an amenable number.

30512122153 is a deficient number, since it is larger than the sum of its proper divisors (387441047).

30512122153 is a wasteful number, since it uses less digits than its factorization.

30512122153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170767.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 30512122153 its reverse (35122121503), we get a palindrome (65634243656).

The spelling of 30512122153 in words is "thirty billion, five hundred twelve million, one hundred twenty-two thousand, one hundred fifty-three".

Divisors: 1 131 199 26069 1170437 153327247 232916963 30512122153