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34247031 = 3721317921
BaseRepresentation
bin1000001010100…
…1000101110111
32101102221002120
42002221011313
532231401111
63222011023
7564044400
oct202510567
971387076
1034247031
1118371335
12b576a73
137131120
1447969a7
153017406
hex20a9177

34247031 has 24 divisors (see below), whose sum is σ = 57207024. Its totient is φ = 18063360.

The previous prime is 34247011. The next prime is 34247041. The reversal of 34247031 is 13074243.

It is not a de Polignac number, because 34247031 - 26 = 34246967 is a prime.

It is a super-2 number, since 2×342470312 = 2345718264629922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 34246992 and 34247010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34247011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7050 + ... + 10871.

It is an arithmetic number, because the mean of its divisors is an integer number (2383626).

Almost surely, 234247031 is an apocalyptic number.

34247031 is a deficient number, since it is larger than the sum of its proper divisors (22959993).

34247031 is a wasteful number, since it uses less digits than its factorization.

34247031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17951 (or 17944 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 34247031 is about 5852.0962910738. The cubic root of 34247031 is about 324.7438802664.

The spelling of 34247031 in words is "thirty-four million, two hundred forty-seven thousand, thirty-one".

Divisors: 1 3 7 13 21 39 49 91 147 273 637 1911 17921 53763 125447 232973 376341 698919 878129 1630811 2634387 4892433 11415677 34247031