1066051331 has 4 divisors (see below), whose sum is σ = 1066589832. Its totient is φ = 1065512832.

The previous prime is 1066051307. The next prime is 1066051333. The reversal of 1066051331 is 1331506601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1331506601 = 1031 ⋅1291471.

It is a cyclic number.

It is not a de Polignac number, because 1066051331 - 2⁶ = 1066051267 is a prime.

It is a super-2 number, since 2×1066051331² = 2272930880653743122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1066051331.

It is not an unprimeable number, because it can be changed into a prime (1066051333) 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, 266270 + ... + 270243.

It is an arithmetic number, because the mean of its divisors is an integer number (266647458).

Almost surely, 2^1066051331 is an apocalyptic number.

1066051331 is a deficient number, since it is larger than the sum of its proper divisors (538501).

1066051331 is an equidigital number, since it uses as much as digits as its factorization.

1066051331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538500.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 1066051331 is about 32650.4415130944. The cubic root of 1066051331 is about 1021.5493980966.

Adding to 1066051331 its reverse (1331506601), we get a palindrome (2397557932).

The spelling of 1066051331 in words is "one billion, sixty-six million, fifty-one thousand, three hundred thirty-one".