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34221131 = 72925813
BaseRepresentation
bin1000001010001…
…0110001001011
32101101121120022
42002202301023
532230034011
63221251055
7563606030
oct202426113
971347508
1034221131
111835392a
12b563a8b
1371223b9
14478b387
15300e8db
hex20a2c4b

34221131 has 12 divisors (see below), whose sum is σ = 40511952. Its totient is φ = 28316064.

The previous prime is 34221113. The next prime is 34221137. The reversal of 34221131 is 13112243.

It is a de Polignac number, because none of the positive numbers 2k-34221131 is a prime.

It is a super-2 number, since 2×342211312 = 2342171613838322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34221137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2981 + ... + 8793.

It is an arithmetic number, because the mean of its divisors is an integer number (3375996).

Almost surely, 234221131 is an apocalyptic number.

34221131 is a deficient number, since it is larger than the sum of its proper divisors (6290821).

34221131 is an equidigital number, since it uses as much as digits as its factorization.

34221131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5878 (or 5849 counting only the distinct ones).

The product of its digits is 144, while the sum is 17.

The square root of 34221131 is about 5849.8829902828. The cubic root of 34221131 is about 324.6619949424.

Adding to 34221131 its reverse (13112243), we get a palindrome (47333374).

The spelling of 34221131 in words is "thirty-four million, two hundred twenty-one thousand, one hundred thirty-one".

Divisors: 1 7 29 203 841 5813 5887 40691 168577 1180039 4888733 34221131