1061131069 has 4 divisors (see below), whose sum is σ = 1073053980. Its totient is φ = 1049208160.

The previous prime is 1061131037. The next prime is 1061131087. The reversal of 1061131069 is 9601311601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9601311601 = 7 ⋅1371615943.

It can be written as a sum of positive squares in 2 ways, for example, as 674025444 + 387105625 = 25962^2 + 19675^2 .

It is a cyclic number.

It is not a de Polignac number, because 1061131069 - 2⁵ = 1061131037 is a prime.

It is a super-2 number, since 2×1061131069² = 2251998291194165522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061131369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5961322 + ... + 5961499.

It is an arithmetic number, because the mean of its divisors is an integer number (268263495).

Almost surely, 2^1061131069 is an apocalyptic number.

It is an amenable number.

1061131069 is a deficient number, since it is larger than the sum of its proper divisors (11922911).

1061131069 is an equidigital number, since it uses as much as digits as its factorization.

1061131069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11922910.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 1061131069 is about 32575.0068150415. The cubic root of 1061131069 is about 1019.9753515125.

The spelling of 1061131069 in words is "one billion, sixty-one million, one hundred thirty-one thousand, sixty-nine".