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231001460 = 225312291627
BaseRepresentation
bin11011100010011…
…00110101110100
3121002200002102122
431301030311310
5433114021320
634531055112
75503323434
oct1561146564
9532602378
10231001460
111094378a8
1265441498
1338b20071
14229722c4
151542ed25
hexdc4cd74

231001460 has 48 divisors (see below), whose sum is σ = 503247360. Its totient is φ = 88974720.

The previous prime is 231001403. The next prime is 231001483. The reversal of 231001460 is 64100132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141167 + ... + 142793.

It is an arithmetic number, because the mean of its divisors is an integer number (10484320).

Almost surely, 2231001460 is an apocalyptic number.

231001460 is a gapful number since it is divisible by the number (20) 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 231001460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251623680).

231001460 is an abundant number, since it is smaller than the sum of its proper divisors (272245900).

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

231001460 is a wasteful number, since it uses less digits than its factorization.

231001460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896 (or 1894 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 231001460 is about 15198.7321839685. The cubic root of 231001460 is about 613.5805366412.

Adding to 231001460 its reverse (64100132), we get a palindrome (295101592).

The spelling of 231001460 in words is "two hundred thirty-one million, one thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 31 62 124 155 229 310 458 620 916 1145 1627 2290 3254 4580 6508 7099 8135 14198 16270 28396 32540 35495 50437 70990 100874 141980 201748 252185 372583 504370 745166 1008740 1490332 1862915 3725830 7451660 11550073 23100146 46200292 57750365 115500730 231001460