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1231104 = 2837229
BaseRepresentation
bin100101100100100000000
32022112202110
410230210000
5303343404
642215320
713315140
oct4544400
92275673
101231104
11770a46
124b4540
13341484
14240920
15194b89
hex12c900

1231104 has 72 divisors (see below), whose sum is σ = 3760960. Its totient is φ = 350208.

The previous prime is 1231099. The next prime is 1231127. The reversal of 1231104 is 4011321.

Adding to 1231104 its reverse (4011321), we get a palindrome (5242425).

It can be divided in two parts, 12 and 31104, that multiplied together give a cube (373248 = 723).

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1231104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5262 + ... + 5490.

21231104 is an apocalyptic number.

1231104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1880480).

1231104 is an abundant number, since it is smaller than the sum of its proper divisors (2529856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231104 is an equidigital number, since it uses as much as digits as its factorization.

1231104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1231104 is about 1109.5512606455. The cubic root of 1231104 is about 107.1761735121.

The spelling of 1231104 in words is "one million, two hundred thirty-one thousand, one hundred four".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 64 84 96 112 128 168 192 224 229 256 336 384 448 458 672 687 768 896 916 1344 1374 1603 1792 1832 2688 2748 3206 3664 4809 5376 5496 6412 7328 9618 10992 12824 14656 19236 21984 25648 29312 38472 43968 51296 58624 76944 87936 102592 153888 175872 205184 307776 410368 615552 1231104