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131120768 = 278631187
BaseRepresentation
bin1111101000010…
…11111010000000
3100010201121212202
413310023322000
5232031331033
621002212332
73151336202
oct764137200
9303647782
10131120768
1168017a79
1237ab40a8
132121b96c
14135b2772
15b7a08e8
hex7d0be80

131120768 has 32 divisors (see below), whose sum is σ = 261740160. Its totient is φ = 65429248.

The previous prime is 131120749. The next prime is 131120831. The reversal of 131120768 is 867021131.

131120768 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 131120768.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109871 + ... + 111057.

It is an arithmetic number, because the mean of its divisors is an integer number (8179380).

Almost surely, 2131120768 is an apocalyptic number.

It is an amenable number.

131120768 is a deficient number, since it is larger than the sum of its proper divisors (130619392).

131120768 is an equidigital number, since it uses as much as digits as its factorization.

131120768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2064 (or 2052 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 131120768 is about 11450.7977014704. The cubic root of 131120768 is about 508.0313287972.

Adding to 131120768 its reverse (867021131), we get a palindrome (998141899).

The spelling of 131120768 in words is "one hundred thirty-one million, one hundred twenty thousand, seven hundred sixty-eight".

Divisors: 1 2 4 8 16 32 64 128 863 1187 1726 2374 3452 4748 6904 9496 13808 18992 27616 37984 55232 75968 110464 151936 1024381 2048762 4097524 8195048 16390096 32780192 65560384 131120768