Search a number
-
+
1231141 is a prime number
BaseRepresentation
bin100101100100100100101
32022112210211
410230210211
5303344031
642215421
713315222
oct4544445
92275724
101231141
11770a7a
124b4571
133414b2
14240949
15194bb1
hex12c925

1231141 has 2 divisors, whose sum is σ = 1231142. Its totient is φ = 1231140.

The previous prime is 1231129. The next prime is 1231171. The reversal of 1231141 is 1411321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1147041 + 84100 = 1071^2 + 290^2 .

It is a cyclic number.

It is not a de Polignac number, because 1231141 - 29 = 1230629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615570 + 615571.

It is an arithmetic number, because the mean of its divisors is an integer number (615571).

21231141 is an apocalyptic number.

It is an amenable number.

1231141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231141 is an equidigital number, since it uses as much as digits as its factorization.

1231141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24, while the sum is 13.

The square root of 1231141 is about 1109.5679339274. The cubic root of 1231141 is about 107.1772472039.

Adding to 1231141 its reverse (1411321), we get a palindrome (2642462).

The spelling of 1231141 in words is "one million, two hundred thirty-one thousand, one hundred forty-one".