1065116231 has 8 divisors (see below), whose sum is σ = 1122884400. Its totient is φ = 1007519040.

The previous prime is 1065116189. The next prime is 1065116233. The reversal of 1065116231 is 1326115601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1065116231 is a prime.

It is a super-2 number, since 2×1065116231² = 2268945171079290722, 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 1065116231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1065116233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29846 + ... + 54963.

It is an arithmetic number, because the mean of its divisors is an integer number (140360550).

Almost surely, 2^1065116231 is an apocalyptic number.

1065116231 is a deficient number, since it is larger than the sum of its proper divisors (57768169).

1065116231 is an equidigital number, since it uses as much as digits as its factorization.

1065116231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85489.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1065116231 is about 32636.1185038907. The cubic root of 1065116231 is about 1021.2506225267.

The spelling of 1065116231 in words is "one billion, sixty-five million, one hundred sixteen thousand, two hundred thirty-one".