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230520124431 = 3225613347159
BaseRepresentation
bin1101011010110000010…
…0011111010000001111
3211001000100021122110100
43112230010133100033
512234101122440211
6253522142142143
722440334504422
oct3265404372017
9731010248410
10230520124431
1189843667433
1238814881953
13189793942bc
14b22b63d9b9
155ee2a8e156
hex35ac11f40f

230520124431 has 6 divisors (see below), whose sum is σ = 332973513080. Its totient is φ = 153680082948.

The previous prime is 230520124397. The next prime is 230520124463. The reversal of 230520124431 is 134421025032.

230520124431 is a `hidden beast` number, since 2 + 3 + 0 + 5 + 201 + 24 + 431 = 666.

230520124431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2k-230520124431 is a prime.

It is a super-2 number, since 2×2305201244312 (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230520124395 and 230520124404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230520124481) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 12806673571 + ... + 12806673588.

Almost surely, 2230520124431 is an apocalyptic number.

230520124431 is a deficient number, since it is larger than the sum of its proper divisors (102453388649).

230520124431 is a wasteful number, since it uses less digits than its factorization.

230520124431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25613347165 (or 25613347162 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 230520124431 its reverse (134421025032), we get a palindrome (364941149463).

The spelling of 230520124431 in words is "two hundred thirty billion, five hundred twenty million, one hundred twenty-four thousand, four hundred thirty-one".

Divisors: 1 3 9 25613347159 76840041477 230520124431