Search a number
-
+
2131155 = 325133643
BaseRepresentation
bin1000001000010011010011
311000021101200
420020103103
51021144110
6113402243
724054165
oct10102323
94007350
102131155
111226194
12869383
13598050
143d6935
152c16c0
hex2084d3

2131155 has 24 divisors (see below), whose sum is σ = 3979248. Its totient is φ = 1048896.

The previous prime is 2131141. The next prime is 2131193. The reversal of 2131155 is 5511312.

It is not a de Polignac number, because 2131155 - 211 = 2129107 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1237 + ... + 2406.

It is an arithmetic number, because the mean of its divisors is an integer number (165802).

22131155 is an apocalyptic number.

2131155 is a deficient number, since it is larger than the sum of its proper divisors (1848093).

2131155 is a wasteful number, since it uses less digits than its factorization.

2131155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3667 (or 3664 counting only the distinct ones).

The product of its digits is 150, while the sum is 18.

The square root of 2131155 is about 1459.8475947852. The cubic root of 2131155 is about 128.6880872400.

Adding to 2131155 its reverse (5511312), we get a palindrome (7642467).

The spelling of 2131155 in words is "two million, one hundred thirty-one thousand, one hundred fifty-five".

Divisors: 1 3 5 9 13 15 39 45 65 117 195 585 3643 10929 18215 32787 47359 54645 142077 163935 236795 426231 710385 2131155