Search a number
-
+
131000343 = 367976719
BaseRepresentation
bin1111100111011…
…10100000010111
3100010111111200120
413303232200113
5232014002333
620555443023
73150325125
oct763564027
9303444616
10131000343
1167a45551
1237a56473
13211a8bc6
1413580915
15b779db3
hex7cee817

131000343 has 16 divisors (see below), whose sum is σ = 179128320. Its totient is φ = 85130496.

The previous prime is 131000321. The next prime is 131000357. The reversal of 131000343 is 343000131.

It is not a de Polignac number, because 131000343 - 28 = 131000087 is a prime.

It is a super-2 number, since 2×1310003432 = 34322179732235298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131000543) 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, 16138 + ... + 22856.

It is an arithmetic number, because the mean of its divisors is an integer number (11195520).

Almost surely, 2131000343 is an apocalyptic number.

131000343 is a deficient number, since it is larger than the sum of its proper divisors (48127977).

131000343 is an equidigital number, since it uses as much as digits as its factorization.

131000343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6886.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 131000343 is about 11445.5381262744. The cubic root of 131000343 is about 507.8757510730.

Adding to 131000343 its reverse (343000131), we get a palindrome (474000474).

The spelling of 131000343 in words is "one hundred thirty-one million, three hundred forty-three", and thus it is an aban number.

Divisors: 1 3 67 97 201 291 6499 6719 19497 20157 450173 651743 1350519 1955229 43666781 131000343