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13457075431 = 75479178289
BaseRepresentation
bin11001000100001101…
…01010110011100111
31021201211212021002011
430202012222303213
5210030002403211
610103155455051
7654323153032
oct144206526347
937654767064
1013457075431
115786193a48
1227368b7487
131365ca8037
1491934a019
1553b63b921
hex3221aace7

13457075431 has 4 divisors (see below), whose sum is σ = 13457329200. Its totient is φ = 13456821664.

The previous prime is 13457075389. The next prime is 13457075447.

13457075431 is nontrivially palindromic in base 10.

13457075431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13457075431 - 217 = 13456944359 is a prime.

It is a super-2 number, since 2×134570754312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13457075461) 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, 13666 + ... + 164623.

It is an arithmetic number, because the mean of its divisors is an integer number (3364332300).

Almost surely, 213457075431 is an apocalyptic number.

13457075431 is a deficient number, since it is larger than the sum of its proper divisors (253769).

13457075431 is an equidigital number, since it uses as much as digits as its factorization.

13457075431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253768.

The product of its (nonzero) digits is 176400, while the sum is 40.

The spelling of 13457075431 in words is "thirteen billion, four hundred fifty-seven million, seventy-five thousand, four hundred thirty-one".

Divisors: 1 75479 178289 13457075431