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20150412431 = 73557495571
BaseRepresentation
bin10010110001000011…
…101110010010001111
31221000022120000022112
4102301003232102033
5312232001144211
613131301134235
71312226452052
oct226103562217
957008500275
1020150412431
118600423116
123aa43ba37b
131b918bc486
14d9227aa99
157ce07c88b
hex4b10ee48f

20150412431 has 8 divisors (see below), whose sum is σ = 20463159024. Its totient is φ = 19838658240.

The previous prime is 20150412427. The next prime is 20150412463. The reversal of 20150412431 is 13421405102.

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

It is a cyclic number.

It is not a de Polignac number, because 20150412431 - 22 = 20150412427 is a prime.

It is a super-2 number, since 2×201504124312 (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 = 20150412397 and 20150412406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20150432431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207125 + ... + 288446.

It is an arithmetic number, because the mean of its divisors is an integer number (2557894878).

Almost surely, 220150412431 is an apocalyptic number.

20150412431 is a deficient number, since it is larger than the sum of its proper divisors (312746593).

20150412431 is an equidigital number, since it uses as much as digits as its factorization.

20150412431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496201.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 20150412431 its reverse (13421405102), we get a palindrome (33571817533).

The spelling of 20150412431 in words is "twenty billion, one hundred fifty million, four hundred twelve thousand, four hundred thirty-one".

Divisors: 1 73 557 40661 495571 36176683 276033047 20150412431