Search a number
-
+
131205341 = 434764921
BaseRepresentation
bin1111101001000…
…00100011011101
3100010212220220002
413310200203131
5232042032331
621004104045
73152140601
oct764404335
9303786802
10131205341
1168075573
1237b35025
132124b2c7
14135d5501
15b7ba9cb
hex7d208dd

131205341 has 8 divisors (see below), whose sum is σ = 137115264. Its totient is φ = 125425440.

The previous prime is 131205323. The next prime is 131205359. The reversal of 131205341 is 143502131.

It is an interprime number because it is at equal distance from previous prime (131205323) and next prime (131205359).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-131205341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131205301) 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, 30440 + ... + 34481.

It is an arithmetic number, because the mean of its divisors is an integer number (17139408).

Almost surely, 2131205341 is an apocalyptic number.

It is an amenable number.

131205341 is a deficient number, since it is larger than the sum of its proper divisors (5909923).

131205341 is an equidigital number, since it uses as much as digits as its factorization.

131205341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65011.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 131205341 is about 11454.4899930115. The cubic root of 131205341 is about 508.1405321927.

Adding to 131205341 its reverse (143502131), we get a palindrome (274707472).

The spelling of 131205341 in words is "one hundred thirty-one million, two hundred five thousand, three hundred forty-one".

Divisors: 1 43 47 2021 64921 2791603 3051287 131205341