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23112203012 = 2227720859389
BaseRepresentation
bin10101100001100110…
…000011101100000100
32012122201200120011222
4111201212003230010
5334313210444022
614341222415512
71445512325033
oct254146035404
965581616158
1023112203012
119890266228
124590291598
1322443b6192
14119377871a
159040c5242
hex561983b04

23112203012 has 12 divisors (see below), whose sum is σ = 40592372940. Its totient is φ = 11514382176.

The previous prime is 23112202957. The next prime is 23112203017. The reversal of 23112203012 is 21030221132.

It can be written as a sum of positive squares in 2 ways, for example, as 15691069696 + 7421133316 = 125264^2 + 86146^2 .

It is not an unprimeable number, because it can be changed into a prime (23112203017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10428587 + ... + 10430802.

It is an arithmetic number, because the mean of its divisors is an integer number (3382697745).

Almost surely, 223112203012 is an apocalyptic number.

It is an amenable number.

23112203012 is a deficient number, since it is larger than the sum of its proper divisors (17480169928).

23112203012 is a wasteful number, since it uses less digits than its factorization.

23112203012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20859670 (or 20859668 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 23112203012 its reverse (21030221132), we get a palindrome (44142424144).

The spelling of 23112203012 in words is "twenty-three billion, one hundred twelve million, two hundred three thousand, twelve".

Divisors: 1 2 4 277 554 1108 20859389 41718778 83437556 5778050753 11556101506 23112203012