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31441000505 = 58375761447
BaseRepresentation
bin11101010010000001…
…111001100000111001
310000011011210022110012
4131102001321200321
51003342344004010
622235505431305
72162065044335
oct352201714071
9100134708405
1031441000505
1112374697042
12611563b535
132c70a9a915
1417439907c5
15c403bc005
hex752079839

31441000505 has 8 divisors (see below), whose sum is σ = 38183769792. Its totient is φ = 24849754288.

The previous prime is 31441000477. The next prime is 31441000639. The reversal of 31441000505 is 50500014413.

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 31441000505 - 28 = 31441000249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37880309 + ... + 37881138.

It is an arithmetic number, because the mean of its divisors is an integer number (4772971224).

Almost surely, 231441000505 is an apocalyptic number.

It is an amenable number.

31441000505 is a deficient number, since it is larger than the sum of its proper divisors (6742769287).

31441000505 is an equidigital number, since it uses as much as digits as its factorization.

31441000505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75761535.

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 31441000505 its reverse (50500014413), we get a palindrome (81941014918).

The spelling of 31441000505 in words is "thirty-one billion, four hundred forty-one million, five hundred five", and thus it is an aban number.

Divisors: 1 5 83 415 75761447 378807235 6288200101 31441000505