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107581431 = 3673111721
BaseRepresentation
bin1100110100110…
…00111111110111
321111102200222110
412122120333313
5210020101211
614401502103
72444266326
oct632307767
9244380873
10107581431
11557aa581
1230041933
1319399569
14104060bd
1596a0ea6
hex6698ff7

107581431 has 16 divisors (see below), whose sum is σ = 146135808. Its totient is φ = 70382400.

The previous prime is 107581421. The next prime is 107581469. The reversal of 107581431 is 134185701.

It is not a de Polignac number, because 107581431 - 27 = 107581303 is a prime.

It is a super-2 number, since 2×1075814312 = 23147528592015522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107581421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61651 + ... + 63371.

It is an arithmetic number, because the mean of its divisors is an integer number (9133488).

Almost surely, 2107581431 is an apocalyptic number.

107581431 is a deficient number, since it is larger than the sum of its proper divisors (38554377).

107581431 is a wasteful number, since it uses less digits than its factorization.

107581431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 107581431 is about 10372.1468848064. The cubic root of 107581431 is about 475.6042997605.

The spelling of 107581431 in words is "one hundred seven million, five hundred eighty-one thousand, four hundred thirty-one".

Divisors: 1 3 67 201 311 933 1721 5163 20837 62511 115307 345921 535231 1605693 35860477 107581431