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16285237431 = 317319318381
BaseRepresentation
bin11110010101010110…
…10000000010110111
31120000221112202222220
433022223100002313
5231323010044211
611251545053423
71114364143221
oct171253200267
946027482886
1016285237431
1169a7656a11
1231a5a87273
1316c6bb5788
14b06bc1411
15654a8a806
hex3caad00b7

16285237431 has 8 divisors (see below), whose sum is σ = 22990923504. Its totient is φ = 10218188160.

The previous prime is 16285237373. The next prime is 16285237457. The reversal of 16285237431 is 13473258261.

16285237431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16285237431 - 222 = 16281043127 is a prime.

It is a super-2 number, since 2×162852374312 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16285237931) 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 7 ways as a sum of consecutive naturals, for example, 159659140 + ... + 159659241.

It is an arithmetic number, because the mean of its divisors is an integer number (2873865438).

Almost surely, 216285237431 is an apocalyptic number.

16285237431 is a deficient number, since it is larger than the sum of its proper divisors (6705686073).

16285237431 is a wasteful number, since it uses less digits than its factorization.

16285237431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319318401.

The product of its digits is 241920, while the sum is 42.

The spelling of 16285237431 in words is "sixteen billion, two hundred eighty-five million, two hundred thirty-seven thousand, four hundred thirty-one".

Divisors: 1 3 17 51 319318381 957955143 5428412477 16285237431