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34256531 is a prime number
BaseRepresentation
bin1000001010101…
…1011010010011
32101110102010102
42002223122103
532232202111
63222123015
7564114161
oct202533223
971412112
1034256531
1118378491
12b58046b
13713554a
14479a231
15301a13b
hex20ab693

34256531 has 2 divisors, whose sum is σ = 34256532. Its totient is φ = 34256530.

The previous prime is 34256503. The next prime is 34256549. The reversal of 34256531 is 13565243.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-34256531 is a prime.

It is a super-2 number, since 2×342565312 = 2347019832307922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 34256494 and 34256503.

It is not a weakly prime, because it can be changed into another prime (34256501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17128265 + 17128266.

It is an arithmetic number, because the mean of its divisors is an integer number (17128266).

Almost surely, 234256531 is an apocalyptic number.

34256531 is the 2618-th centered decagonal number.

34256531 is a deficient number, since it is larger than the sum of its proper divisors (1).

34256531 is an equidigital number, since it uses as much as digits as its factorization.

34256531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 29.

The square root of 34256531 is about 5852.9079097488. The cubic root of 34256531 is about 324.7739050749.

The spelling of 34256531 in words is "thirty-four million, two hundred fifty-six thousand, five hundred thirty-one".