161332207 has 2 divisors, whose sum is σ = 161332208. Its totient is φ = 161332206.

The previous prime is 161332201. The next prime is 161332231. The reversal of 161332207 is 702233161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161332207 - 2⁷ = 161332079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161332201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80666103 + 80666104.

It is an arithmetic number, because the mean of its divisors is an integer number (80666104).

Almost surely, 2^161332207 is an apocalyptic number.

161332207 is a deficient number, since it is larger than the sum of its proper divisors (1).

161332207 is an equidigital number, since it uses as much as digits as its factorization.

161332207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 161332207 is about 12701.6615842180. The cubic root of 161332207 is about 544.3860966101.

Adding to 161332207 its reverse (702233161), we get a palindrome (863565368).

The spelling of 161332207 in words is "one hundred sixty-one million, three hundred thirty-two thousand, two hundred seven".