1066033231 has 4 divisors (see below), whose sum is σ = 1066099464. Its totient is φ = 1065967000.

The previous prime is 1066033223. The next prime is 1066033261. The reversal of 1066033231 is 1323306601.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1323306601 = 1637 ⋅808373.

It is a cyclic number.

It is not a de Polignac number, because 1066033231 - 2³ = 1066033223 is a prime.

It is a super-2 number, since 2×1066033231² = 2272853699192598722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1066033196 and 1066033205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066033261) 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, 8256 + ... + 46906.

It is an arithmetic number, because the mean of its divisors is an integer number (266524866).

Almost surely, 2^1066033231 is an apocalyptic number.

1066033231 is a deficient number, since it is larger than the sum of its proper divisors (66233).

1066033231 is an equidigital number, since it uses as much as digits as its factorization.

1066033231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66232.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 1066033231 is about 32650.1643334302. The cubic root of 1066033231 is about 1021.5436165899.

Adding to 1066033231 its reverse (1323306601), we get a palindrome (2389339832).

The spelling of 1066033231 in words is "one billion, sixty-six million, thirty-three thousand, two hundred thirty-one".