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11231441 = 131750821
BaseRepresentation
bin101010110110…
…000011010001
3210010121122022
4222312003101
510333401231
61040421225
7164315504
oct52660321
923117568
1011231441
116381391
123917815
132433230
1416c513b
15ebcc7b
hexab60d1

11231441 has 8 divisors (see below), whose sum is σ = 12807144. Its totient is φ = 9757440.

The previous prime is 11231431. The next prime is 11231443. The reversal of 11231441 is 14413211.

11231441 = T638 + T639 + ... + T688.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4393216 + 6838225 = 2096^2 + 2615^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11231441 - 26 = 11231377 is a prime.

It is a super-2 number, since 2×112314412 = 252290533872962, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11231443) 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 7 ways as a sum of consecutive naturals, for example, 25190 + ... + 25631.

It is an arithmetic number, because the mean of its divisors is an integer number (1600893).

Almost surely, 211231441 is an apocalyptic number.

It is an amenable number.

11231441 is a deficient number, since it is larger than the sum of its proper divisors (1575703).

11231441 is a wasteful number, since it uses less digits than its factorization.

11231441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50851.

The product of its digits is 96, while the sum is 17.

The square root of 11231441 is about 3351.3342119222. The cubic root of 11231441 is about 223.9469541164.

Adding to 11231441 its reverse (14413211), we get a palindrome (25644652).

The spelling of 11231441 in words is "eleven million, two hundred thirty-one thousand, four hundred forty-one".

Divisors: 1 13 17 221 50821 660673 863957 11231441