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20151431041 = 78813267623
BaseRepresentation
bin10010110001000111…
…100110111110000001
31221000101110202120211
4102301013212332001
5312232231243131
613131335034121
71312241223550
oct226107467601
957011422524
1020151431041
118600a59445
123aa480b941
131b91b87cc1
14d92463d97
157ce1ce5b1
hex4b11e6f81

20151431041 has 8 divisors (see below), whose sum is σ = 23056354944. Its totient is φ = 17253044160.

The previous prime is 20151431039. The next prime is 20151431051. The reversal of 20151431041 is 14013415102.

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 20151431041 - 21 = 20151431039 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20151431021) 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, 1627645 + ... + 1639978.

It is an arithmetic number, because the mean of its divisors is an integer number (2882044368).

Almost surely, 220151431041 is an apocalyptic number.

It is an amenable number.

20151431041 is a deficient number, since it is larger than the sum of its proper divisors (2904923903).

20151431041 is an equidigital number, since it uses as much as digits as its factorization.

20151431041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3268511.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 20151431041 its reverse (14013415102), we get a palindrome (34164846143).

The spelling of 20151431041 in words is "twenty billion, one hundred fifty-one million, four hundred thirty-one thousand, forty-one".

Divisors: 1 7 881 6167 3267623 22873361 2878775863 20151431041