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131246834 = 21719331997
BaseRepresentation
bin1111101001010…
…10101011110010
3100010222000210212
413310222223302
5232044344314
621005024122
73152402555
oct764525362
9303860725
10131246834
11680a3764
1237b55042
1321264164
141360669c
15b7c7e3e
hex7d2aaf2

131246834 has 16 divisors (see below), whose sum is σ = 208663128. Its totient is φ = 61700352.

The previous prime is 131246833. The next prime is 131246861. The reversal of 131246834 is 438642131.

It can be written as a sum of positive squares in 4 ways, for example, as 104755225 + 26491609 = 10235^2 + 5147^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 131246834.

It is not an unprimeable number, because it can be changed into a prime (131246831) 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, 64724 + ... + 66720.

Almost surely, 2131246834 is an apocalyptic number.

131246834 is a deficient number, since it is larger than the sum of its proper divisors (77416294).

131246834 is a wasteful number, since it uses less digits than its factorization.

131246834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3949.

The product of its digits is 13824, while the sum is 32.

The square root of 131246834 is about 11456.3010609882. The cubic root of 131246834 is about 508.1940921386.

Adding to 131246834 its reverse (438642131), we get a palindrome (569888965).

The spelling of 131246834 in words is "one hundred thirty-one million, two hundred forty-six thousand, eight hundred thirty-four".

Divisors: 1 2 17 34 1933 1997 3866 3994 32861 33949 65722 67898 3860201 7720402 65623417 131246834