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34311531 = 371161087
BaseRepresentation
bin1000001011100…
…0110101101011
32101120012120110
42002320311223
532240432111
63223225403
7564433422
oct202706553
971505513
1034311531
1118405841
12b5a8263
1371545a7
1447b22b9
15302b5a6
hex20b8d6b

34311531 has 8 divisors (see below), whose sum is σ = 46393344. Its totient is φ = 22552040.

The previous prime is 34311521. The next prime is 34311539. The reversal of 34311531 is 13511343.

34311531 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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-34311531 is a prime.

It is a super-2 number, since 2×343115312 = 2354562319127922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 34311498 and 34311507.

It is not an unprimeable number, because it can be changed into a prime (34311539) 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 7 ways as a sum of consecutive naturals, for example, 80331 + ... + 80756.

It is an arithmetic number, because the mean of its divisors is an integer number (5799168).

Almost surely, 234311531 is an apocalyptic number.

34311531 is a deficient number, since it is larger than the sum of its proper divisors (12081813).

34311531 is a wasteful number, since it uses less digits than its factorization.

34311531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161161.

The product of its digits is 540, while the sum is 21.

The square root of 34311531 is about 5857.6045445216. The cubic root of 34311531 is about 324.9476239068.

Adding to 34311531 its reverse (13511343), we get a palindrome (47822874).

The spelling of 34311531 in words is "thirty-four million, three hundred eleven thousand, five hundred thirty-one".

Divisors: 1 3 71 213 161087 483261 11437177 34311531