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131241343 = 1747831979
BaseRepresentation
bin1111101001010…
…01010101111111
3100010221202021111
413310221111333
5232044210333
621004542451
73152350552
oct764512577
9303852244
10131241343
116809a622
1237b51a27
13212617cc
1413604699
15b7c64cd
hex7d2957f

131241343 has 16 divisors (see below), whose sum is σ = 143700480. Its totient is φ = 119376256.

The previous prime is 131241337. The next prime is 131241347. The reversal of 131241343 is 343142131.

It is a cyclic number.

It is not a de Polignac number, because 131241343 - 217 = 131110271 is a prime.

It is a super-2 number, since 2×1312413432 = 34448580224887298, which 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 (131241347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65328 + ... + 67306.

It is an arithmetic number, because the mean of its divisors is an integer number (8981280).

Almost surely, 2131241343 is an apocalyptic number.

131241343 is a deficient number, since it is larger than the sum of its proper divisors (12459137).

131241343 is a wasteful number, since it uses less digits than its factorization.

131241343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126.

The product of its digits is 864, while the sum is 22.

The square root of 131241343 is about 11456.0614087041. The cubic root of 131241343 is about 508.1870049005.

Adding to 131241343 its reverse (343142131), we get a palindrome (474383474).

The spelling of 131241343 in words is "one hundred thirty-one million, two hundred forty-one thousand, three hundred forty-three".

Divisors: 1 17 47 83 799 1411 1979 3901 33643 66317 93013 164257 1581221 2792369 7720079 131241343