161340227 has 2 divisors, whose sum is σ = 161340228. Its totient is φ = 161340226.

The previous prime is 161340209. The next prime is 161340241. The reversal of 161340227 is 722043161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161340227 - 2¹⁴ = 161323843 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 161340196 and 161340205.

It is not a weakly prime, because it can be changed into another prime (161340527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80670113 + 80670114.

It is an arithmetic number, because the mean of its divisors is an integer number (80670114).

Almost surely, 2^161340227 is an apocalyptic number.

161340227 is a deficient number, since it is larger than the sum of its proper divisors (1).

161340227 is an equidigital number, since it uses as much as digits as its factorization.

161340227 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 161340227 is about 12701.9772870211. The cubic root of 161340227 is about 544.3951171362.

Adding to 161340227 its reverse (722043161), we get a palindrome (883383388).

The spelling of 161340227 in words is "one hundred sixty-one million, three hundred forty thousand, two hundred twenty-seven".