Search a number
-
+
860431 = 11213547
BaseRepresentation
bin11010010000100001111
31121201021211
43102010033
5210013211
630235251
710212355
oct3220417
91551254
10860431
11538500
12355b27
13241840
141857d5
1511ee21
hexd210f

860431 has 12 divisors (see below), whose sum is σ = 1020376. Its totient is φ = 720720.

The previous prime is 860423. The next prime is 860441. The reversal of 860431 is 134068.

860431 is nontrivially palindromic in base 3.

It is not a de Polignac number, because 860431 - 23 = 860423 is a prime.

It is a super-2 number, since 2×8604312 = 1480683011522, which contains 22 as substring.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (860441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1300 + ... + 1846.

2860431 is an apocalyptic number.

860431 is a deficient number, since it is larger than the sum of its proper divisors (159945).

860431 is a wasteful number, since it uses less digits than its factorization.

860431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582 (or 571 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 860431 is about 927.5942000681. The cubic root of 860431 is about 95.1127378124.

Adding to 860431 its reverse (134068), we get a palindrome (994499).

The spelling of 860431 in words is "eight hundred sixty thousand, four hundred thirty-one".

Divisors: 1 11 13 121 143 547 1573 6017 7111 66187 78221 860431