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12040130431 = 72892159473
BaseRepresentation
bin10110011011010010…
…11100111101111111
31011002002121222221201
423031221130331333
5144124233133211
65310421440331
7604236264040
oct131551347577
934062558851
1012040130431
11511938121a
1224002700a7
13119b575844
148230a68c7
154a704b0c1
hex2cda5cf7f

12040130431 has 8 divisors (see below), whose sum is σ = 13760856224. Its totient is φ = 10319581440.

The previous prime is 12040130411. The next prime is 12040130461. The reversal of 12040130431 is 13403104021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12040130431 - 227 = 11905912703 is a prime.

It is a super-2 number, since 2×120401304312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12040130399 and 12040130408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12040130411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172711 + ... + 232183.

It is an arithmetic number, because the mean of its divisors is an integer number (1720107028).

Almost surely, 212040130431 is an apocalyptic number.

12040130431 is a deficient number, since it is larger than the sum of its proper divisors (1720725793).

12040130431 is an equidigital number, since it uses as much as digits as its factorization.

12040130431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88401.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12040130431 its reverse (13403104021), we get a palindrome (25443234452).

The spelling of 12040130431 in words is "twelve billion, forty million, one hundred thirty thousand, four hundred thirty-one".

Divisors: 1 7 28921 59473 202447 416311 1720018633 12040130431