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1085131 is a prime number
BaseRepresentation
bin100001000111011001011
32001010112001
410020323023
5234211011
635131431
712136435
oct4107313
92033461
101085131
11681303
12443b77
132bcbb8
14203655
151667c1
hex108ecb

1085131 has 2 divisors, whose sum is σ = 1085132. Its totient is φ = 1085130.

The previous prime is 1085113. The next prime is 1085137. The reversal of 1085131 is 1315801.

Together with previous prime (1085113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (1315801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1085131 - 27 = 1085003 is a prime.

It is a super-2 number, since 2×10851312 = 2355018574322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1085099 and 1085108.

It is not a weakly prime, because it can be changed into another prime (1085137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542565 + 542566.

It is an arithmetic number, because the mean of its divisors is an integer number (542566).

21085131 is an apocalyptic number.

1085131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1085131 is an equidigital number, since it uses as much as digits as its factorization.

1085131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 1085131 is about 1041.6962129143. The cubic root of 1085131 is about 102.7607795496.

The spelling of 1085131 in words is "one million, eighty-five thousand, one hundred thirty-one".