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13288144831 = 134091249857
BaseRepresentation
bin11000110000000100…
…01111111110111111
31021022001222200212021
430120002033332333
5204203231113311
610034323021011
7650202240013
oct143002177677
937261880767
1013288144831
1156a98a1985
1226aa20a767
131339cab6c0
14900b34543
1552b8bd171
hex31808ffbf

13288144831 has 8 divisors (see below), whose sum is σ = 14313865104. Its totient is φ = 12262932480.

The previous prime is 13288144819. The next prime is 13288144861. The reversal of 13288144831 is 13844188231.

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 13288144831 - 29 = 13288144319 is a prime.

It is a super-2 number, since 2×132881448312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13288144811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71746 + ... + 178111.

It is an arithmetic number, because the mean of its divisors is an integer number (1789233138).

Almost surely, 213288144831 is an apocalyptic number.

13288144831 is a deficient number, since it is larger than the sum of its proper divisors (1025720273).

13288144831 is a wasteful number, since it uses less digits than its factorization.

13288144831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253961.

The product of its digits is 147456, while the sum is 43.

The spelling of 13288144831 in words is "thirteen billion, two hundred eighty-eight million, one hundred forty-four thousand, eight hundred thirty-one".

Divisors: 1 13 4091 53183 249857 3248141 1022164987 13288144831