Search a number
-
+
131709095 = 5717921023
BaseRepresentation
bin1111101100110…
…11100010100111
3100011211111220122
413312123202213
5232204142340
621022552155
73156336350
oct766334247
9304744818
10131709095
1168389aa1
123813865b
132139669b
14136c6d27
15b869db5
hex7d9b8a7

131709095 has 16 divisors (see below), whose sum is σ = 181647360. Its totient is φ = 89805984.

The previous prime is 131709089. The next prime is 131709107. The reversal of 131709095 is 590907131.

It is a cyclic number.

It is not a de Polignac number, because 131709095 - 24 = 131709079 is a prime.

It is a super-4 number, since 4×1317090954 (a number of 34 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4247 + ... + 16776.

It is an arithmetic number, because the mean of its divisors is an integer number (11352960).

Almost surely, 2131709095 is an apocalyptic number.

131709095 is a deficient number, since it is larger than the sum of its proper divisors (49938265).

131709095 is a wasteful number, since it uses less digits than its factorization.

131709095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21214.

The product of its (nonzero) digits is 8505, while the sum is 35.

The square root of 131709095 is about 11476.4582951362. The cubic root of 131709095 is about 508.7900253651.

The spelling of 131709095 in words is "one hundred thirty-one million, seven hundred nine thousand, ninety-five".

Divisors: 1 5 7 35 179 895 1253 6265 21023 105115 147161 735805 3763117 18815585 26341819 131709095