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105031001 = 533475711
BaseRepresentation
bin1100100001010…
…10010101011001
321022122010110002
412100222111121
5203341443001
614231102345
72413514555
oct620522531
9238563402
10105031001
1154318389
122b2119b5
13189b572a
14dd40865
15934a46b
hex642a559

105031001 has 8 divisors (see below), whose sum is σ = 107339904. Its totient is φ = 102734320.

The previous prime is 105030997. The next prime is 105031019. The reversal of 105031001 is 100130501.

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 105031001 - 22 = 105030997 is a prime.

It is a super-2 number, since 2×1050310012 = 22063022342124002, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (105031021) 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, 15536 + ... + 21246.

It is an arithmetic number, because the mean of its divisors is an integer number (13417488).

Almost surely, 2105031001 is an apocalyptic number.

It is an amenable number.

105031001 is a deficient number, since it is larger than the sum of its proper divisors (2308903).

105031001 is an equidigital number, since it uses as much as digits as its factorization.

105031001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6111.

The product of its (nonzero) digits is 15, while the sum is 11.

The square root of 105031001 is about 10248.4633482293. The cubic root of 105031001 is about 471.8158230602.

Adding to 105031001 its reverse (100130501), we get a palindrome (205161502).

The spelling of 105031001 in words is "one hundred five million, thirty-one thousand, one".

Divisors: 1 53 347 5711 18391 302683 1981717 105031001