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30231010129 = 172973174773
BaseRepresentation
bin11100001001111010…
…001001101101010001
32220000211222102200211
4130021322021231101
5443403114311004
621515443244121
72120103226525
oct341172115521
986024872624
1030231010129
11119036873a1
125a38379641
132b0a1b9098
14166adbdd85
15bbe05b504
hex709e89b51

30231010129 has 4 divisors (see below), whose sum is σ = 30231357876. Its totient is φ = 30230662384.

The previous prime is 30231010127. The next prime is 30231010193. The reversal of 30231010129 is 92101013203.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 17736912400 + 12494097729 = 133180^2 + 111777^2 .

It is a cyclic number.

It is not a de Polignac number, because 30231010129 - 21 = 30231010127 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30231010123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85587 + ... + 260359.

It is an arithmetic number, because the mean of its divisors is an integer number (7557839469).

Almost surely, 230231010129 is an apocalyptic number.

It is an amenable number.

30231010129 is a deficient number, since it is larger than the sum of its proper divisors (347747).

30231010129 is a wasteful number, since it uses less digits than its factorization.

30231010129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347746.

The product of its (nonzero) digits is 324, while the sum is 22.

The spelling of 30231010129 in words is "thirty billion, two hundred thirty-one million, ten thousand, one hundred twenty-nine".

Divisors: 1 172973 174773 30231010129