83723161 has 2 divisors, whose sum is σ = 83723162. Its totient is φ = 83723160.

The previous prime is 83723153. The next prime is 83723201. The reversal of 83723161 is 16132738.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74304400 + 9418761 = 8620^2 + 3069^2 .

It is a cyclic number.

It is not a de Polignac number, because 83723161 - 2³ = 83723153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83723111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41861580 + 41861581.

It is an arithmetic number, because the mean of its divisors is an integer number (41861581).

Almost surely, 2^83723161 is an apocalyptic number.

It is an amenable number.

83723161 is a deficient number, since it is larger than the sum of its proper divisors (1).

83723161 is an equidigital number, since it uses as much as digits as its factorization.

83723161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 31.

The square root of 83723161 is about 9150.0361201473. The cubic root of 83723161 is about 437.4702647546.

Adding to 83723161 its reverse (16132738), we get a palindrome (99855899).

The spelling of 83723161 in words is "eighty-three million, seven hundred twenty-three thousand, one hundred sixty-one".