144322693 has 2 divisors, whose sum is σ = 144322694. Its totient is φ = 144322692.

The previous prime is 144322691. The next prime is 144322751. The reversal of 144322693 is 396223441.

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., 108118404 + 36204289 = 10398^2 + 6017^2 .

It is an emirp because it is prime and its reverse (396223441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144322693 - 2¹ = 144322691 is a prime.

Together with 144322691, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144322691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72161346 + 72161347.

It is an arithmetic number, because the mean of its divisors is an integer number (72161347).

Almost surely, 2^144322693 is an apocalyptic number.

It is an amenable number.

144322693 is a deficient number, since it is larger than the sum of its proper divisors (1).

144322693 is an equidigital number, since it uses as much as digits as its factorization.

144322693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 34.

The square root of 144322693 is about 12013.4380174869. The cubic root of 144322693 is about 524.5395121637.

The spelling of 144322693 in words is "one hundred forty-four million, three hundred twenty-two thousand, six hundred ninety-three".