232145161 has 2 divisors, whose sum is σ = 232145162. Its totient is φ = 232145160.

The previous prime is 232145093. The next prime is 232145171. The reversal of 232145161 is 161541232.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209525625 + 22619536 = 14475^2 + 4756^2 .

It is a cyclic number.

It is not a de Polignac number, because 232145161 - 2¹¹ = 232143113 is a prime.

It is not a weakly prime, because it can be changed into another prime (232145171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116072580 + 116072581.

It is an arithmetic number, because the mean of its divisors is an integer number (116072581).

Almost surely, 2^232145161 is an apocalyptic number.

It is an amenable number.

232145161 is a deficient number, since it is larger than the sum of its proper divisors (1).

232145161 is an equidigital number, since it uses as much as digits as its factorization.

232145161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 25.

The square root of 232145161 is about 15236.3106098557. The cubic root of 232145161 is about 614.5914937576.

Adding to 232145161 its reverse (161541232), we get a palindrome (393686393).

The spelling of 232145161 in words is "two hundred thirty-two million, one hundred forty-five thousand, one hundred sixty-one".