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231402254045012 = 22411993707972581
BaseRepresentation
bin110100100111010110001001…
…001001110000111101010100
31010100022211122221200221222222
4310213112021021300331110
5220312243304013420022
62140052421123241512
766512155400515631
oct6447261111607524
91110284587627888
10231402254045012
1167806165845006
1221b53382819298
139c171a62a9c2b
14411dd00ac5188
151bb4484d1d242
hexd27589270f54

231402254045012 has 24 divisors (see below), whose sum is σ = 415039014581352. Its totient is φ = 112822510348800.

The previous prime is 231402254044999. The next prime is 231402254045029. The reversal of 231402254045012 is 210540452204132.

It can be written as a sum of positive squares in 4 ways, for example, as 65993949279556 + 165408304765456 = 8123666^2 + 12861116^2 .

It is a super-2 number, since 2×2314022540450122 (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353659439 + ... + 354313142.

It is an arithmetic number, because the mean of its divisors is an integer number (17293292274223).

Almost surely, 2231402254045012 is an apocalyptic number.

It is an amenable number.

231402254045012 is a deficient number, since it is larger than the sum of its proper divisors (183636760536340).

231402254045012 is a wasteful number, since it uses less digits than its factorization.

231402254045012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707974619 (or 707974617 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 35.

The spelling of 231402254045012 in words is "two hundred thirty-one trillion, four hundred two billion, two hundred fifty-four million, forty-five thousand, twelve".

Divisors: 1 2 4 41 82 164 1993 3986 7972 81713 163426 326852 707972581 1415945162 2831890324 29026875821 58053751642 116107503284 1410989353933 2821978707866 5643957415732 57850563511253 115701127022506 231402254045012