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107219381 = 487220163
BaseRepresentation
bin1100110010000…
…00100110110101
321110202022100012
412121000212311
5204422010011
614350030005
72441230643
oct631004665
9243668305
10107219381
1155582565
122baa8305
13192a0829
1410350193
15962da8b
hex66409b5

107219381 has 4 divisors (see below), whose sum is σ = 107440032. Its totient is φ = 106998732.

The previous prime is 107219347. The next prime is 107219401. The reversal of 107219381 is 183912701.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 107219381 - 210 = 107218357 is a prime.

It is a super-2 number, since 2×1072193812 = 22991991324046322, 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 (107219311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109595 + ... + 110568.

It is an arithmetic number, because the mean of its divisors is an integer number (26860008).

Almost surely, 2107219381 is an apocalyptic number.

It is an amenable number.

107219381 is a deficient number, since it is larger than the sum of its proper divisors (220651).

107219381 is an equidigital number, since it uses as much as digits as its factorization.

107219381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220650.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 107219381 is about 10354.6791838280. The cubic root of 107219381 is about 475.0701739352.

It can be divided in two parts, 10721 and 9381, that added together give a palindrome (20102).

The spelling of 107219381 in words is "one hundred seven million, two hundred nineteen thousand, three hundred eighty-one".

Divisors: 1 487 220163 107219381