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7131230 = 253112293
BaseRepresentation
bin11011001101000001011110
3111102022012122
4123031001132
53311144410
6412502542
7114420521
oct33150136
914368178
107131230
114030887
12247aa52
131628b82
14d38bb8
1595ce55
hex6cd05e

7131230 has 16 divisors (see below), whose sum is σ = 12883104. Its totient is φ = 2842080.

The previous prime is 7131217. The next prime is 7131259. The reversal of 7131230 is 321317.

It is a junction number, because it is equal to n+sod(n) for n = 7131199 and 7131208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1964 + ... + 4256.

It is an arithmetic number, because the mean of its divisors is an integer number (805194).

Almost surely, 27131230 is an apocalyptic number.

7131230 is a deficient number, since it is larger than the sum of its proper divisors (5751874).

7131230 is a wasteful number, since it uses less digits than its factorization.

7131230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2611.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 7131230 is about 2670.4362939415. The cubic root of 7131230 is about 192.4811248148.

Adding to 7131230 its reverse (321317), we get a palindrome (7452547).

The spelling of 7131230 in words is "seven million, one hundred thirty-one thousand, two hundred thirty".

Divisors: 1 2 5 10 311 622 1555 2293 3110 4586 11465 22930 713123 1426246 3565615 7131230