Search a number
-
+
10805831 is a prime number
BaseRepresentation
bin101001001110…
…001001000111
3202022222210222
4221032021013
510231241311
61023334555
7160563611
oct51161107
922288728
1010805831
116110643
12375145b
1323145aa
141613db1
15e36adb
hexa4e247

10805831 has 2 divisors, whose sum is σ = 10805832. Its totient is φ = 10805830.

The previous prime is 10805819. The next prime is 10805843. The reversal of 10805831 is 13850801.

It is a balanced prime because it is at equal distance from previous prime (10805819) and next prime (10805843).

It is a cyclic number.

It is not a de Polignac number, because 10805831 - 214 = 10789447 is a prime.

It is a super-2 number, since 2×108058312 = 233531967201122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10805831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10805891) 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 as a sum of consecutive naturals, namely, 5402915 + 5402916.

It is an arithmetic number, because the mean of its divisors is an integer number (5402916).

Almost surely, 210805831 is an apocalyptic number.

10805831 is a deficient number, since it is larger than the sum of its proper divisors (1).

10805831 is an equidigital number, since it uses as much as digits as its factorization.

10805831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 10805831 is about 3287.2223837155. Note that the first 3 decimals coincide. The cubic root of 10805831 is about 221.0816634792.

The spelling of 10805831 in words is "ten million, eight hundred five thousand, eight hundred thirty-one".