Search a number
-
+
131030075 = 52112272099
BaseRepresentation
bin1111100111101…
…01110000111011
3100010120000110202
413303311300323
5232020430300
621000232415
73150510611
oct763656073
9303500422
10131030075
1167a65920
1237a6b70b
13211b95b7
141358b6b1
15b783ad5
hex7cf5c3b

131030075 has 24 divisors (see below), whose sum is σ = 178113600. Its totient is φ = 94829600.

The previous prime is 131030071. The next prime is 131030083. The reversal of 131030075 is 570030131.

It is a happy number.

It is not a de Polignac number, because 131030075 - 22 = 131030071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131030071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61376 + ... + 63474.

It is an arithmetic number, because the mean of its divisors is an integer number (7421400).

Almost surely, 2131030075 is an apocalyptic number.

131030075 is a deficient number, since it is larger than the sum of its proper divisors (47083525).

131030075 is a wasteful number, since it uses less digits than its factorization.

131030075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2347 (or 2342 counting only the distinct ones).

The product of its (nonzero) digits is 315, while the sum is 20.

The square root of 131030075 is about 11446.8368993360. The cubic root of 131030075 is about 507.9141708696.

The spelling of 131030075 in words is "one hundred thirty-one million, thirty thousand, seventy-five".

Divisors: 1 5 11 25 55 227 275 1135 2099 2497 5675 10495 12485 23089 52475 62425 115445 476473 577225 2382365 5241203 11911825 26206015 131030075