Search a number
-
+
131255201 = 7111704613
BaseRepresentation
bin1111101001011…
…00101110100001
3100010222110021202
413310230232201
5232100131301
621005130545
73152436140
oct764545641
9303873252
10131255201
11680a9a80
1237b59a55
1321267bcc
1413609757
15b7ca66b
hex7d2cba1

131255201 has 8 divisors (see below), whose sum is σ = 163642944. Its totient is φ = 102276720.

The previous prime is 131255183. The next prime is 131255203. The reversal of 131255201 is 102552131.

It is a happy number.

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

It is not a de Polignac number, because 131255201 - 222 = 127060897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131255203) 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, 852230 + ... + 852383.

It is an arithmetic number, because the mean of its divisors is an integer number (20455368).

Almost surely, 2131255201 is an apocalyptic number.

131255201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131255201 is a deficient number, since it is larger than the sum of its proper divisors (32387743).

131255201 is a wasteful number, since it uses less digits than its factorization.

131255201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1704631.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 131255201 is about 11456.6662253904. Note that the first 3 decimals coincide. The cubic root of 131255201 is about 508.2048910520.

The spelling of 131255201 in words is "one hundred thirty-one million, two hundred fifty-five thousand, two hundred one".

Divisors: 1 7 11 77 1704613 11932291 18750743 131255201