1071331165 has 4 divisors (see below), whose sum is σ = 1285597404. Its totient is φ = 857064928.

The previous prime is 1071331153. The next prime is 1071331199. The reversal of 1071331165 is 5611331701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5611331701 = 13229 ⋅424169.

It can be written as a sum of positive squares in 2 ways, for example, as 595262404 + 476068761 = 24398^2 + 21819^2 .

It is a cyclic number.

It is not a de Polignac number, because 1071331165 - 2⁵ = 1071331133 is a prime.

It is a super-2 number, since 2×1071331165² = 2295500930200514450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107133112 + ... + 107133121.

It is an arithmetic number, because the mean of its divisors is an integer number (321399351).

Almost surely, 2^1071331165 is an apocalyptic number.

It is an amenable number.

1071331165 is a deficient number, since it is larger than the sum of its proper divisors (214266239).

1071331165 is an equidigital number, since it uses as much as digits as its factorization.

1071331165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214266238.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 1071331165 is about 32731.1955938062. The cubic root of 1071331165 is about 1023.2330979311.

Adding to 1071331165 its reverse (5611331701), we get a palindrome (6682662866).

The spelling of 1071331165 in words is "one billion, seventy-one million, three hundred thirty-one thousand, one hundred sixty-five".