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71431108 = 22719134269
BaseRepresentation
bin1000100000111…
…11001111000100
311222102002001121
410100133033010
5121241243413
611031003324
71525103650
oct420371704
9158362047
1071431108
1137359281
121bb09544
1311a50038
1496b5a60
15640eb8d
hex441f3c4

71431108 has 24 divisors (see below), whose sum is σ = 150382400. Its totient is φ = 29001888.

The previous prime is 71431103. The next prime is 71431109. The reversal of 71431108 is 80113417.

71431108 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

71431108 is strictly pandigital in base 9.

It is not an unprimeable number, because it can be changed into a prime (71431103) 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, 66603 + ... + 67666.

Almost surely, 271431108 is an apocalyptic number.

It is an amenable number.

71431108 is an abundant number, since it is smaller than the sum of its proper divisors (78951292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71431108 is a wasteful number, since it uses less digits than its factorization.

71431108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134299 (or 134297 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 71431108 is about 8451.6926115424. The cubic root of 71431108 is about 414.9181780916.

The spelling of 71431108 in words is "seventy-one million, four hundred thirty-one thousand, one hundred eight".

Divisors: 1 2 4 7 14 19 28 38 76 133 266 532 134269 268538 537076 939883 1879766 2551111 3759532 5102222 10204444 17857777 35715554 71431108