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12312101003 = 29424555207
BaseRepresentation
bin10110111011101101…
…11100000010001011
31011210001101112102212
423131312330002023
5200203344213003
65353415015335
7614051063126
oct133566740213
934701345385
1012312101003
115248950794
12247736a54b
131212a0b587
1484b2613bd
154c0d6edd8
hex2dddbc08b

12312101003 has 4 divisors (see below), whose sum is σ = 12736656240. Its totient is φ = 11887545768.

The previous prime is 12312100991. The next prime is 12312101017. The reversal of 12312101003 is 30010121321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30010121321 = 140292139149.

It is a cyclic number.

It is not a de Polignac number, because 12312101003 - 210 = 12312099979 is a prime.

It is a super-2 number, since 2×123121010032 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12312101083) 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 3 ways as a sum of consecutive naturals, for example, 212277575 + ... + 212277632.

It is an arithmetic number, because the mean of its divisors is an integer number (3184164060).

Almost surely, 212312101003 is an apocalyptic number.

12312101003 is a deficient number, since it is larger than the sum of its proper divisors (424555237).

12312101003 is an equidigital number, since it uses as much as digits as its factorization.

12312101003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424555236.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 12312101003 its reverse (30010121321), we get a palindrome (42322222324).

The spelling of 12312101003 in words is "twelve billion, three hundred twelve million, one hundred one thousand, three".

Divisors: 1 29 424555207 12312101003