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12131333041 = 29418321829
BaseRepresentation
bin10110100110001010…
…10111001110110001
31011022110020120102011
423103011113032301
5144321110124131
65323440322521
7606424425622
oct132305271661
934273216364
1012131333041
115165904083
122426913441
1311b4428c99
14831247a49
154b00640b1
hex2d31573b1

12131333041 has 4 divisors (see below), whose sum is σ = 12549654900. Its totient is φ = 11713011184.

The previous prime is 12131333029. The next prime is 12131333051. The reversal of 12131333041 is 14033313121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3905750016 + 8225583025 = 62496^2 + 90695^2 .

It is a cyclic number.

It is not a de Polignac number, because 12131333041 - 29 = 12131332529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12131333021) 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, 209160886 + ... + 209160943.

It is an arithmetic number, because the mean of its divisors is an integer number (3137413725).

Almost surely, 212131333041 is an apocalyptic number.

It is an amenable number.

12131333041 is a deficient number, since it is larger than the sum of its proper divisors (418321859).

12131333041 is an equidigital number, since it uses as much as digits as its factorization.

12131333041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418321858.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 12131333041 its reverse (14033313121), we get a palindrome (26164646162).

The spelling of 12131333041 in words is "twelve billion, one hundred thirty-one million, three hundred thirty-three thousand, forty-one".

Divisors: 1 29 418321829 12131333041