1067311261 has 2 divisors, whose sum is σ = 1067311262. Its totient is φ = 1067311260.

The previous prime is 1067311177. The next prime is 1067311279. The reversal of 1067311261 is 1621137601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1065043225 + 2268036 = 32635^2 + 1506^2 .

It is a cyclic number.

It is not a de Polignac number, because 1067311261 - 2¹¹ = 1067309213 is a prime.

It is a super-2 number, since 2×1067311261² = 2278306655714820242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1067311291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533655630 + 533655631.

It is an arithmetic number, because the mean of its divisors is an integer number (533655631).

Almost surely, 2^1067311261 is an apocalyptic number.

It is an amenable number.

1067311261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1067311261 is an equidigital number, since it uses as much as digits as its factorization.

1067311261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 1067311261 is about 32669.7300417374. The cubic root of 1067311261 is about 1021.9516845456.

Adding to 1067311261 its reverse (1621137601), we get a palindrome (2688448862).

The spelling of 1067311261 in words is "one billion, sixty-seven million, three hundred eleven thousand, two hundred sixty-one".