Search a number
-
+
223631441 = 11293718947
BaseRepresentation
bin11010101010001…
…01100001010001
3120120210122122222
431111011201101
5424222201231
634105110425
75353556465
oct1525054121
9516718588
10223631441
11105263680
1262a88415
133743c5c7
14219b44a5
151497627b
hexd545851

223631441 has 16 divisors (see below), whose sum is σ = 259208640. Its totient is φ = 190975680.

The previous prime is 223631423. The next prime is 223631459. The reversal of 223631441 is 144136322.

It is an interprime number because it is at equal distance from previous prime (223631423) and next prime (223631459).

It is a cyclic number.

It is not a de Polignac number, because 223631441 - 210 = 223630417 is a prime.

It is a super-2 number, since 2×2236314412 = 100022042807472962, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 223631441.

It is not an unprimeable number, because it can be changed into a prime (223631491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2330 + ... + 21276.

It is an arithmetic number, because the mean of its divisors is an integer number (16200540).

Almost surely, 2223631441 is an apocalyptic number.

It is an amenable number.

223631441 is a deficient number, since it is larger than the sum of its proper divisors (35577199).

223631441 is a wasteful number, since it uses less digits than its factorization.

223631441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19024.

The product of its digits is 3456, while the sum is 26.

The square root of 223631441 is about 14954.3117862374. The cubic root of 223631441 is about 606.9845275412.

Adding to 223631441 its reverse (144136322), we get a palindrome (367767763).

The spelling of 223631441 in words is "two hundred twenty-three million, six hundred thirty-one thousand, four hundred forty-one".

Divisors: 1 11 29 37 319 407 1073 11803 18947 208417 549463 701039 6044093 7711429 20330131 223631441