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131464312705 = 51117144797169
BaseRepresentation
bin111101001101111100…
…0100011011110000001
3110120022222022001000201
41322123320203132001
54123214331001310
6140221024245201
712332544135415
oct1723370433601
9416288261021
10131464312705
11508321a4a20
122158b170801
13c52138025b
146511b5cd45
1536466ade3a
hex1e9be23781

131464312705 has 32 divisors (see below), whose sum is σ = 182349999360. Its totient is φ = 89923153920.

The previous prime is 131464312703. The next prime is 131464312723. The reversal of 131464312705 is 507213464131.

It is a happy number.

It is not a de Polignac number, because 131464312705 - 21 = 131464312703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131464312703) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1304361 + ... + 1401529.

It is an arithmetic number, because the mean of its divisors is an integer number (5698437480).

Almost surely, 2131464312705 is an apocalyptic number.

It is an amenable number.

131464312705 is a deficient number, since it is larger than the sum of its proper divisors (50885686655).

131464312705 is a wasteful number, since it uses less digits than its factorization.

131464312705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98649.

The product of its (nonzero) digits is 60480, while the sum is 37.

Adding to 131464312705 its reverse (507213464131), we get a palindrome (638677776836).

The spelling of 131464312705 in words is "one hundred thirty-one billion, four hundred sixty-four million, three hundred twelve thousand, seven hundred five".

Divisors: 1 5 11 17 55 85 187 935 1447 7235 15917 24599 79585 97169 122995 270589 485845 1068859 1352945 1651873 5344295 8259365 18170603 90853015 140603543 703017715 1546638973 2390260231 7733194865 11951301155 26292862541 131464312705