83231969 has 2 divisors, whose sum is σ = 83231970. Its totient is φ = 83231968.

The previous prime is 83231947. The next prime is 83232013. The reversal of 83231969 is 96913238.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57577744 + 25654225 = 7588^2 + 5065^2 .

It is a cyclic number.

It is not a de Polignac number, because 83231969 - 2¹² = 83227873 is a prime.

It is a super-2 number, since 2×83231969² = 13855121327233922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (83237969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41615984 + 41615985.

It is an arithmetic number, because the mean of its divisors is an integer number (41615985).

Almost surely, 2^83231969 is an apocalyptic number.

It is an amenable number.

83231969 is a deficient number, since it is larger than the sum of its proper divisors (1).

83231969 is an equidigital number, since it uses as much as digits as its factorization.

83231969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 41.

The square root of 83231969 is about 9123.1556492258. The cubic root of 83231969 is about 436.6130607103.

The spelling of 83231969 in words is "eighty-three million, two hundred thirty-one thousand, nine hundred sixty-nine".