162231689 has 2 divisors, whose sum is σ = 162231690. Its totient is φ = 162231688.

The previous prime is 162231683. The next prime is 162231703. The reversal of 162231689 is 986132261.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162129289 + 102400 = 12733^2 + 320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162231689 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (162231683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81115844 + 81115845.

It is an arithmetic number, because the mean of its divisors is an integer number (81115845).

Almost surely, 2^162231689 is an apocalyptic number.

It is an amenable number.

162231689 is a deficient number, since it is larger than the sum of its proper divisors (1).

162231689 is an equidigital number, since it uses as much as digits as its factorization.

162231689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 38.

The square root of 162231689 is about 12737.0204129537. The cubic root of 162231689 is about 545.3959348295.

The spelling of 162231689 in words is "one hundred sixty-two million, two hundred thirty-one thousand, six hundred eighty-nine".