161234329 has 2 divisors, whose sum is σ = 161234330. Its totient is φ = 161234328.

The previous prime is 161234309. The next prime is 161234351. The reversal of 161234329 is 923432161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158760000 + 2474329 = 12600^2 + 1573^2 .

It is an emirp because it is prime and its reverse (923432161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161234329 - 2⁷ = 161234201 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is equal to p_9039910 and since 161234329 and 9039910 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161234329.

It is not a weakly prime, because it can be changed into another prime (161234309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80617164 + 80617165.

It is an arithmetic number, because the mean of its divisors is an integer number (80617165).

Almost surely, 2^161234329 is an apocalyptic number.

It is an amenable number.

161234329 is a deficient number, since it is larger than the sum of its proper divisors (1).

161234329 is an equidigital number, since it uses as much as digits as its factorization.

161234329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 31.

The square root of 161234329 is about 12697.8080391853. The cubic root of 161234329 is about 544.2759838549.

The spelling of 161234329 in words is "one hundred sixty-one million, two hundred thirty-four thousand, three hundred twenty-nine".