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14030318381 = 19813708137
BaseRepresentation
bin11010001000100010…
…11010101100101101
31100012210112000120112
431010101122230231
5212213230142011
610240114225405
71004453511212
oct150421325455
940183460515
1014030318381
115a4a826952
122876885265
131427995a51
14971529b09
15571b2158b
hex34445ab2d

14030318381 has 4 divisors (see below), whose sum is σ = 14031046332. Its totient is φ = 14029590432.

The previous prime is 14030318327. The next prime is 14030318383. The reversal of 14030318381 is 18381303041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18381303041 = 42017437473.

It can be written as a sum of positive squares in 2 ways, for example, as 733922281 + 13296396100 = 27091^2 + 115310^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-14030318381 is a prime.

It is a super-2 number, since 2×140303183812 (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 (14030318383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334256 + ... + 373881.

It is an arithmetic number, because the mean of its divisors is an integer number (3507761583).

Almost surely, 214030318381 is an apocalyptic number.

It is an amenable number.

14030318381 is a deficient number, since it is larger than the sum of its proper divisors (727951).

14030318381 is an equidigital number, since it uses as much as digits as its factorization.

14030318381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727950.

The product of its (nonzero) digits is 6912, while the sum is 32.

The spelling of 14030318381 in words is "fourteen billion, thirty million, three hundred eighteen thousand, three hundred eighty-one".

Divisors: 1 19813 708137 14030318381