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12230120131 = 56472165773
BaseRepresentation
bin10110110001111100…
…01101001011000011
31011120100010110211021
423120332031023003
5200021402321011
65341325530311
7612034206625
oct133076151303
934510113737
1012230120131
1152066472a9
122453a13997
1311cba36698
14840400c15
154b8a79471
hex2d8f8d2c3

12230120131 has 4 divisors (see below), whose sum is σ = 12232291552. Its totient is φ = 12227948712.

The previous prime is 12230120129. The next prime is 12230120137. The reversal of 12230120131 is 13102103221.

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

It is a cyclic number.

It is not a de Polignac number, because 12230120131 - 21 = 12230120129 is a prime.

It is a super-2 number, since 2×122301201312 (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 (12230120137) 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, 1077240 + ... + 1088533.

It is an arithmetic number, because the mean of its divisors is an integer number (3058072888).

Almost surely, 212230120131 is an apocalyptic number.

12230120131 is a deficient number, since it is larger than the sum of its proper divisors (2171421).

12230120131 is an equidigital number, since it uses as much as digits as its factorization.

12230120131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2171420.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12230120131 its reverse (13102103221), we get a palindrome (25332223352).

The spelling of 12230120131 in words is "twelve billion, two hundred thirty million, one hundred twenty thousand, one hundred thirty-one".

Divisors: 1 5647 2165773 12230120131