234390161 has 2 divisors, whose sum is σ = 234390162. Its totient is φ = 234390160.

The previous prime is 234390157. The next prime is 234390173. The reversal of 234390161 is 161093432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150209536 + 84180625 = 12256^2 + 9175^2 .

It is a cyclic number.

It is not a de Polignac number, because 234390161 - 2² = 234390157 is a prime.

It is not a weakly prime, because it can be changed into another prime (234390131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117195080 + 117195081.

It is an arithmetic number, because the mean of its divisors is an integer number (117195081).

Almost surely, 2^234390161 is an apocalyptic number.

It is an amenable number.

234390161 is a deficient number, since it is larger than the sum of its proper divisors (1).

234390161 is an equidigital number, since it uses as much as digits as its factorization.

234390161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 234390161 is about 15309.8060405741. The cubic root of 234390161 is about 616.5663126040.

The spelling of 234390161 in words is "two hundred thirty-four million, three hundred ninety thousand, one hundred sixty-one".