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11310131 = 72230819
BaseRepresentation
bin101011001001…
…010000110011
3210021121120202
4223021100303
510343411011
61042225415
7165064100
oct53112063
923247522
1011310131
116425518
12395526b
13245ccb1
141705aa7
15ed623b
hexac9433

11310131 has 6 divisors (see below), whose sum is σ = 13156740. Its totient is φ = 9694356.

The previous prime is 11310119. The next prime is 11310139. The reversal of 11310131 is 13101311.

It is a happy number.

It is not a de Polignac number, because 11310131 - 210 = 11309107 is a prime.

It is a super-2 number, since 2×113101312 = 255838126474322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11310139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 115361 + ... + 115458.

It is an arithmetic number, because the mean of its divisors is an integer number (2192790).

Almost surely, 211310131 is an apocalyptic number.

11310131 is a deficient number, since it is larger than the sum of its proper divisors (1846609).

11310131 is an equidigital number, since it uses as much as digits as its factorization.

11310131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230833 (or 230826 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 11310131 is about 3363.0538205625. The cubic root of 11310131 is about 224.4687449772.

Adding to 11310131 its reverse (13101311), we get a palindrome (24411442).

The spelling of 11310131 in words is "eleven million, three hundred ten thousand, one hundred thirty-one".

Divisors: 1 7 49 230819 1615733 11310131