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80223111 = 3219469141
BaseRepresentation
bin1001100100000…
…01101110000111
312120221202102100
410302001232013
5131014114421
611543243143
71662612423
oct462015607
9176852370
1080223111
11413138a1
1222a494b3
131380aac7
14a923b83
157099c26
hex4c81b87

80223111 has 12 divisors (see below), whose sum is σ = 121976920. Its totient is φ = 50667120.

The previous prime is 80223109. The next prime is 80223137. The reversal of 80223111 is 11132208.

It is not a de Polignac number, because 80223111 - 21 = 80223109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80223181) 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, 234400 + ... + 234741.

Almost surely, 280223111 is an apocalyptic number.

80223111 is a deficient number, since it is larger than the sum of its proper divisors (41753809).

80223111 is a wasteful number, since it uses less digits than its factorization.

80223111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469166 (or 469163 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 80223111 is about 8956.7355102180. The cubic root of 80223111 is about 431.2871312704.

Adding to 80223111 its reverse (11132208), we get a palindrome (91355319).

The spelling of 80223111 in words is "eighty million, two hundred twenty-three thousand, one hundred eleven".

Divisors: 1 3 9 19 57 171 469141 1407423 4222269 8913679 26741037 80223111