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34688431 = 160921559
BaseRepresentation
bin1000010001010…
…0110110101111
32102021100120201
42010110312233
532340012211
63235254331
7600563311
oct204246657
972240521
1034688431
1118642a28
12b74a3a7
137256ccb
14486d7b1
1530a30c1
hex2114daf

34688431 has 4 divisors (see below), whose sum is σ = 34711600. Its totient is φ = 34665264.

The previous prime is 34688417. The next prime is 34688453. The reversal of 34688431 is 13488643.

34688431 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, and also an emirpimes, since its reverse is a distinct semiprime: 13488643 = 71926949.

It is a cyclic number.

It is not a de Polignac number, because 34688431 - 217 = 34557359 is a prime.

It is a super-2 number, since 2×346884312 = 2406574490483522, which 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 (34680431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9171 + ... + 12388.

It is an arithmetic number, because the mean of its divisors is an integer number (8677900).

Almost surely, 234688431 is an apocalyptic number.

34688431 is a deficient number, since it is larger than the sum of its proper divisors (23169).

34688431 is a wasteful number, since it uses less digits than its factorization.

34688431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23168.

The product of its digits is 55296, while the sum is 37.

The square root of 34688431 is about 5889.6885316628. The cubic root of 34688431 is about 326.1331052179.

The spelling of 34688431 in words is "thirty-four million, six hundred eighty-eight thousand, four hundred thirty-one".

Divisors: 1 1609 21559 34688431