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11253231 = 3211197577
BaseRepresentation
bin101010111011…
…010111101111
3210011201112100
4222323113233
510340100411
61041110143
7164436153
oct52732757
923151470
1011253231
1163967a0
123928353
132440122
1416cd063
15ec4456
hexabb5ef

11253231 has 24 divisors (see below), whose sum is σ = 17853264. Its totient is φ = 6773760.

The previous prime is 11253211. The next prime is 11253239. The reversal of 11253231 is 13235211.

It is not a de Polignac number, because 11253231 - 25 = 11253199 is a prime.

It is a super-2 number, since 2×112532312 = 253270415878722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11253239) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 19215 + ... + 19791.

It is an arithmetic number, because the mean of its divisors is an integer number (743886).

Almost surely, 211253231 is an apocalyptic number.

11253231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11253231 is a deficient number, since it is larger than the sum of its proper divisors (6600033).

11253231 is a wasteful number, since it uses less digits than its factorization.

11253231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791 (or 788 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 11253231 is about 3354.5835807146. The cubic root of 11253231 is about 224.0916862653.

Adding to 11253231 its reverse (13235211), we get a palindrome (24488442).

It can be divided in two parts, 1125 and 3231, that added together give a square (4356 = 662).

The spelling of 11253231 in words is "eleven million, two hundred fifty-three thousand, two hundred thirty-one".

Divisors: 1 3 9 11 33 99 197 577 591 1731 1773 2167 5193 6347 6501 19041 19503 57123 113669 341007 1023021 1250359 3751077 11253231