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103221331 = 178397237
BaseRepresentation
bin1100010011100…
…00100001010011
321012020012001021
412021300201103
5202411040311
614124220311
72362236553
oct611604123
9235205037
10103221331
11532a1794
122a69a697
1318500b15
14d9cd163
1590de171
hex6270853

103221331 has 8 divisors (see below), whose sum is σ = 109438560. Its totient is φ = 97020288.

The previous prime is 103221329. The next prime is 103221337. The reversal of 103221331 is 133122301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 103221331 - 21 = 103221329 is a prime.

It is a super-2 number, since 2×1032213312 = 21309286346823122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103221337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10645 + ... + 17881.

It is an arithmetic number, because the mean of its divisors is an integer number (13679820).

Almost surely, 2103221331 is an apocalyptic number.

103221331 is a deficient number, since it is larger than the sum of its proper divisors (6217229).

103221331 is an equidigital number, since it uses as much as digits as its factorization.

103221331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8093.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 103221331 is about 10159.7899092452. The cubic root of 103221331 is about 469.0903349799.

Adding to 103221331 its reverse (133122301), we get a palindrome (236343632).

The spelling of 103221331 in words is "one hundred three million, two hundred twenty-one thousand, three hundred thirty-one".

Divisors: 1 17 839 7237 14263 123029 6071843 103221331