1066311231 has 32 divisors (see below), whose sum is σ = 1510161408. Its totient is φ = 668405760.

The previous prime is 1066311227. The next prime is 1066311283. The reversal of 1066311231 is 1321136601.

It is not a de Polignac number, because 1066311231 - 2² = 1066311227 is a prime.

It is a super-2 number, since 2×1066311231² = 2274039282713470722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066311031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 385951 + ... + 388703.

It is an arithmetic number, because the mean of its divisors is an integer number (47192544).

Almost surely, 2^1066311231 is an apocalyptic number.

1066311231 is a deficient number, since it is larger than the sum of its proper divisors (443850177).

1066311231 is a wasteful number, since it uses less digits than its factorization.

1066311231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2911.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 1066311231 is about 32654.4213086069. The cubic root of 1066311231 is about 1021.6324082068.

Adding to 1066311231 its reverse (1321136601), we get a palindrome (2387447832).

The spelling of 1066311231 in words is "one billion, sixty-six million, three hundred eleven thousand, two hundred thirty-one".