161322347 has 2 divisors, whose sum is σ = 161322348. Its totient is φ = 161322346.

The previous prime is 161322341. The next prime is 161322361. The reversal of 161322347 is 743223161.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161322347 - 2¹⁸ = 161060203 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (161322341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80661173 + 80661174.

It is an arithmetic number, because the mean of its divisors is an integer number (80661174).

Almost surely, 2^161322347 is an apocalyptic number.

161322347 is a deficient number, since it is larger than the sum of its proper divisors (1).

161322347 is an equidigital number, since it uses as much as digits as its factorization.

161322347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 29.

The square root of 161322347 is about 12701.2734400925. The cubic root of 161322347 is about 544.3750061272.

The spelling of 161322347 in words is "one hundred sixty-one million, three hundred twenty-two thousand, three hundred forty-seven".