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1031081 is a prime number
BaseRepresentation
bin11111011101110101001
31221101101012
43323232221
5230443311
634033305
711523032
oct3735651
91841335
101031081
11644737
12418835
132a140c
141cba89
1515578b
hexfbba9

1031081 has 2 divisors, whose sum is σ = 1031082. Its totient is φ = 1031080.

The previous prime is 1031057. The next prime is 1031117. The reversal of 1031081 is 1801301.

Adding to 1031081 its reverse (1801301), we get a palindrome (2832382).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 931225 + 99856 = 965^2 + 316^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031081 - 214 = 1014697 is a prime.

It is a super-3 number, since 3×10310813 = 3288513332450113323, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a plaindrome in base 15.

It is a nialpdrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1031281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515540 + 515541.

It is an arithmetic number, because the mean of its divisors is an integer number (515541).

21031081 is an apocalyptic number.

It is an amenable number.

1031081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031081 is an equidigital number, since it uses as much as digits as its factorization.

1031081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1031081 is about 1015.4215873222. The cubic root of 1031081 is about 101.0254812681.

The spelling of 1031081 in words is "one million, thirty-one thousand, eighty-one".