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1031161 is a prime number
BaseRepresentation
bin11111011101111111001
31221101111011
43323233321
5230444121
634033521
711523205
oct3735771
91841434
101031161
116447aa
124188a1
132a1471
141cbb05
151557e1
hexfbbf9

1031161 has 2 divisors, whose sum is σ = 1031162. Its totient is φ = 1031160.

The previous prime is 1031141. The next prime is 1031189. The reversal of 1031161 is 1611301.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 921600 + 109561 = 960^2 + 331^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031161 - 211 = 1029113 is a prime.

It is not a weakly prime, because it can be changed into another prime (1031141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515580 + 515581.

It is an arithmetic number, because the mean of its divisors is an integer number (515581).

21031161 is an apocalyptic number.

It is an amenable number.

1031161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031161 is an equidigital number, since it uses as much as digits as its factorization.

1031161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1031161 is about 1015.4609790632. The cubic root of 1031161 is about 101.0280940048.

Adding to 1031161 its reverse (1611301), we get a palindrome (2642462).

The spelling of 1031161 in words is "one million, thirty-one thousand, one hundred sixty-one".