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11230131 = 311230937
BaseRepresentation
bin101010110101…
…101110110011
3210010112211210
4222311232303
510333331011
61040411203
7164311623
oct52655663
923115753
1011230131
116380400
123916b03
132432763
1416c4883
15ebc6a6
hexab5bb3

11230131 has 12 divisors (see below), whose sum is σ = 16459016. Its totient is φ = 6805920.

The previous prime is 11230123. The next prime is 11230139. The reversal of 11230131 is 13103211.

It is an interprime number because it is at equal distance from previous prime (11230123) and next prime (11230139).

It is not a de Polignac number, because 11230131 - 23 = 11230123 is a prime.

It is a super-2 number, since 2×112301312 = 252231684554322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11230139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15106 + ... + 15831.

Almost surely, 211230131 is an apocalyptic number.

11230131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11230131 is a deficient number, since it is larger than the sum of its proper divisors (5228885).

11230131 is a wasteful number, since it uses less digits than its factorization.

11230131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30962 (or 30951 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 11230131 is about 3351.1387616749. The cubic root of 11230131 is about 223.9382469548.

Adding to 11230131 its reverse (13103211), we get a palindrome (24333342).

Subtracting 11230131 from its reverse (13103211), we obtain a triangular number (1873080 = T1935).

The spelling of 11230131 in words is "eleven million, two hundred thirty thousand, one hundred thirty-one".

Divisors: 1 3 11 33 121 363 30937 92811 340307 1020921 3743377 11230131