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100106381 = 473176719
BaseRepresentation
bin1011111011110…
…00000010001101
320222100221010202
411331320002031
5201111401011
613533343245
72323614224
oct575700215
9228327122
10100106381
1151564451
1229637b25
131798005b
14d41bcbb
158bc623b
hex5f7808d

100106381 has 8 divisors (see below), whose sum is σ = 102574080. Its totient is φ = 97652848.

The previous prime is 100106371. The next prime is 100106441. The reversal of 100106381 is 183601001.

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 100106381 - 26 = 100106317 is a prime.

It is a super-2 number, since 2×1001063812 = 20042575033834322, 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 (100106341) 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, 11540 + ... + 18258.

It is an arithmetic number, because the mean of its divisors is an integer number (12821760).

Almost surely, 2100106381 is an apocalyptic number.

It is an amenable number.

100106381 is a deficient number, since it is larger than the sum of its proper divisors (2467699).

100106381 is an equidigital number, since it uses as much as digits as its factorization.

100106381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7083.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 100106381 is about 10005.3176361373. The cubic root of 100106381 is about 464.3234173180.

Adding to 100106381 its reverse (183601001), we get a palindrome (283707382).

The spelling of 100106381 in words is "one hundred million, one hundred six thousand, three hundred eighty-one".

Divisors: 1 47 317 6719 14899 315793 2129923 100106381