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1001230023 = 31997181087
BaseRepresentation
bin111011101011011…
…000111011000111
32120202222202101110
4323223120323013
54022303330043
6243203500103
733545212653
oct7353307307
92522882343
101001230023
11474193a32
1223b387633
1312c57b001
1496d8ba63
155cd75b33
hex3bad8ec7

1001230023 has 16 divisors (see below), whose sum is σ = 1419729920. Its totient is φ = 625833216.

The previous prime is 1001230019. The next prime is 1001230031. The reversal of 1001230023 is 3200321001.

It is a happy number.

It is not a de Polignac number, because 1001230023 - 22 = 1001230019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001229990 and 1001230008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001230003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85015 + ... + 96072.

It is an arithmetic number, because the mean of its divisors is an integer number (88733120).

Almost surely, 21001230023 is an apocalyptic number.

1001230023 is a deficient number, since it is larger than the sum of its proper divisors (418499897).

1001230023 is a wasteful number, since it uses less digits than its factorization.

1001230023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181206.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1001230023 is about 31642.2189961450. The cubic root of 1001230023 is about 1000.4098396752.

Adding to 1001230023 its reverse (3200321001), we get a palindrome (4201551024).

The spelling of 1001230023 in words is "one billion, one million, two hundred thirty thousand, twenty-three".

Divisors: 1 3 19 57 97 291 1843 5529 181087 543261 3440653 10321959 17565439 52696317 333743341 1001230023