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12032013131 = 19633263849
BaseRepresentation
bin10110011010010100…
…11111001101001011
31011001112100121002222
423031022133031023
5144120143410011
65305531444255
7604110265325
oct131512371513
934045317088
1012032013131
115114837606
1223b95b668b
131199992bc8
14821d92615
154a6495ddb
hex2cd29f34b

12032013131 has 4 divisors (see below), whose sum is σ = 12665277000. Its totient is φ = 11398749264.

The previous prime is 12032013067. The next prime is 12032013139. The reversal of 12032013131 is 13131023021.

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 12032013131 - 26 = 12032013067 is a prime.

It is a super-2 number, since 2×120320131312 (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 (12032013139) 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, 316631906 + ... + 316631943.

It is an arithmetic number, because the mean of its divisors is an integer number (3166319250).

Almost surely, 212032013131 is an apocalyptic number.

12032013131 is a deficient number, since it is larger than the sum of its proper divisors (633263869).

12032013131 is an equidigital number, since it uses as much as digits as its factorization.

12032013131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633263868.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 12032013131 its reverse (13131023021), we get a palindrome (25163036152).

The spelling of 12032013131 in words is "twelve billion, thirty-two million, thirteen thousand, one hundred thirty-one".

Divisors: 1 19 633263849 12032013131