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80198331 = 3131204067
BaseRepresentation
bin1001100011110…
…11101010111011
312120220111102120
410301323222323
5131012321311
611542532323
71662450243
oct461735273
9176814376
1080198331
11412a7214
1222a370a3
13137cc745
14a918b23
157092706
hex4c7babb

80198331 has 8 divisors (see below), whose sum is σ = 107747904. Its totient is φ = 53057160.

The previous prime is 80198329. The next prime is 80198353. The reversal of 80198331 is 13389108.

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

It is not a de Polignac number, because 80198331 - 21 = 80198329 is a prime.

It is a super-2 number, since 2×801983312 = 12863544590371122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80198292 and 80198301.

It is not an unprimeable number, because it can be changed into a prime (80198731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101641 + ... + 102426.

It is an arithmetic number, because the mean of its divisors is an integer number (13468488).

Almost surely, 280198331 is an apocalyptic number.

80198331 is a deficient number, since it is larger than the sum of its proper divisors (27549573).

80198331 is a wasteful number, since it uses less digits than its factorization.

80198331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204201.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 80198331 is about 8955.3520868808. The cubic root of 80198331 is about 431.2427201460.

The spelling of 80198331 in words is "eighty million, one hundred ninety-eight thousand, three hundred thirty-one".

Divisors: 1 3 131 393 204067 612201 26732777 80198331