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80020231 = 1572831801
BaseRepresentation
bin1001100010100…
…00001100000111
312120120110010021
410301100030013
5130441121411
611535040011
71661106064
oct461201407
9176513107
1080020231
1141195425
1222970007
1313769665
14a8adc6b
157059a71
hex4c50307

80020231 has 8 divisors (see below), whose sum is σ = 80859344. Its totient is φ = 79185600.

The previous prime is 80020223. The next prime is 80020253. The reversal of 80020231 is 13202008.

It is a happy number.

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 80020231 - 23 = 80020223 is a prime.

It is a super-2 number, since 2×800202312 = 12806474738586722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80020211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43531 + ... + 45331.

It is an arithmetic number, because the mean of its divisors is an integer number (10107418).

Almost surely, 280020231 is an apocalyptic number.

80020231 is a deficient number, since it is larger than the sum of its proper divisors (839113).

80020231 is a wasteful number, since it uses less digits than its factorization.

80020231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2241.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 80020231 is about 8945.4027857889. The cubic root of 80020231 is about 430.9232569185.

Adding to 80020231 its reverse (13202008), we get a palindrome (93222239).

The spelling of 80020231 in words is "eighty million, twenty thousand, two hundred thirty-one".

Divisors: 1 157 283 1801 44431 282757 509683 80020231