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2001010031 = 43269172993
BaseRepresentation
bin111011101000100…
…1111110101101111
312011110020211201122
41313101033311233
513044224310111
6530320331155
7100405206326
oct16721176557
95143224648
102001010031
119375774a9
1247a173abb
1325b73c007
1414da7d0bd
15baa11cdb
hex7744fd6f

2001010031 has 8 divisors (see below), whose sum is σ = 2055168720. Its totient is φ = 1947197952.

The previous prime is 2001010009. The next prime is 2001010049. The reversal of 2001010031 is 1300101002.

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 2001010031 - 210 = 2001009007 is a prime.

It is a super-2 number, since 2×20010100312 = 8008082288325241922, 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 (2001010001) 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, 74930 + ... + 98063.

It is an arithmetic number, because the mean of its divisors is an integer number (256896090).

Almost surely, 22001010031 is an apocalyptic number.

2001010031 is a deficient number, since it is larger than the sum of its proper divisors (54158689).

2001010031 is a wasteful number, since it uses less digits than its factorization.

2001010031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173305.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 2001010031 is about 44732.6506145120. The cubic root of 2001010031 is about 1260.1331074211.

Adding to 2001010031 its reverse (1300101002), we get a palindrome (3301111033).

The spelling of 2001010031 in words is "two billion, one million, ten thousand, thirty-one".

Divisors: 1 43 269 11567 172993 7438699 46535117 2001010031