161347207 has 6 divisors (see below), whose sum is σ = 184435224. Its totient is φ = 138268800.

The previous prime is 161347127. The next prime is 161347243. The reversal of 161347207 is 702743161.

It is not a de Polignac number, because 161347207 - 2⁷ = 161347079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161347247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31207 + ... + 36007.

It is an arithmetic number, because the mean of its divisors is an integer number (30739204).

Almost surely, 2^161347207 is an apocalyptic number.

161347207 is a deficient number, since it is larger than the sum of its proper divisors (23088017).

161347207 is an frugal number, since it uses more digits than its factorization.

161347207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9609 (or 4808 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 161347207 is about 12702.2520444211. The cubic root of 161347207 is about 544.4029676750.

The spelling of 161347207 in words is "one hundred sixty-one million, three hundred forty-seven thousand, two hundred seven".