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2012031001 = 17311630237
BaseRepresentation
bin111011111101101…
…0010100000011001
312012012222202122201
41313323102200121
513110034443001
6531352450201
7100600660411
oct16773224031
95165882581
102012031001
11942814742
124819a9961
13260aca4b6
1415130b641
15bb98c501
hex77ed2819

2012031001 has 4 divisors (see below), whose sum is σ = 2023661412. Its totient is φ = 2000400592.

The previous prime is 2012030989. The next prime is 2012031023. The reversal of 2012031001 is 1001302102.

2012031001 = T36623 + T36624 + T36625.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1247784976 + 764246025 = 35324^2 + 27645^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012031001 - 219 = 2011506713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012031101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5814946 + ... + 5815291.

It is an arithmetic number, because the mean of its divisors is an integer number (505915353).

Almost surely, 22012031001 is an apocalyptic number.

2012031001 is the 36625-th centered triangular number.

It is an amenable number.

2012031001 is a deficient number, since it is larger than the sum of its proper divisors (11630411).

2012031001 is a wasteful number, since it uses less digits than its factorization.

2012031001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11630410.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 2012031001 is about 44855.6685492480. The cubic root of 2012031001 is about 1262.4423529016.

Adding to 2012031001 its reverse (1001302102), we get a palindrome (3013333103).

The spelling of 2012031001 in words is "two billion, twelve million, thirty-one thousand, one".

Divisors: 1 173 11630237 2012031001