1065211131 has 4 divisors (see below), whose sum is σ = 1420281512. Its totient is φ = 710140752.

The previous prime is 1065211129. The next prime is 1065211153. The reversal of 1065211131 is 1311125601.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1065211131 - 2¹ = 1065211129 is a prime.

It is a super-2 number, since 2×1065211131² = 2269349507212598322, 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 = 1065211098 and 1065211107.

It is not an unprimeable number, because it can be changed into a prime (1065211171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177535186 + ... + 177535191.

It is an arithmetic number, because the mean of its divisors is an integer number (355070378).

Almost surely, 2^1065211131 is an apocalyptic number.

1065211131 is a deficient number, since it is larger than the sum of its proper divisors (355070381).

1065211131 is an equidigital number, since it uses as much as digits as its factorization.

1065211131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355070380.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 1065211131 is about 32637.5723821488. The cubic root of 1065211131 is about 1021.2809521762.

Adding to 1065211131 its reverse (1311125601), we get a palindrome (2376336732).

The spelling of 1065211131 in words is "one billion, sixty-five million, two hundred eleven thousand, one hundred thirty-one".