161224307 has 2 divisors, whose sum is σ = 161224308. Its totient is φ = 161224306.

The previous prime is 161224279. The next prime is 161224309. The reversal of 161224307 is 703422161.

161224307 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161224307 - 2⁸ = 161224051 is a prime.

Together with 161224309, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (161224309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80612153 + 80612154.

It is an arithmetic number, because the mean of its divisors is an integer number (80612154).

Almost surely, 2^161224307 is an apocalyptic number.

161224307 is a deficient number, since it is larger than the sum of its proper divisors (1).

161224307 is an equidigital number, since it uses as much as digits as its factorization.

161224307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 161224307 is about 12697.4133980114. The cubic root of 161224307 is about 544.2647065896.

Adding to 161224307 its reverse (703422161), we get a palindrome (864646468).

The spelling of 161224307 in words is "one hundred sixty-one million, two hundred twenty-four thousand, three hundred seven".