161023305307 has 8 divisors (see below), whose sum is σ = 161144330256. Its totient is φ = 160902323232.

The previous prime is 161023305299. The next prime is 161023305343. The reversal of 161023305307 is 703503320161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161023305307 - 2³ = 161023305299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161023305367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12204168 + ... + 12217354.

It is an arithmetic number, because the mean of its divisors is an integer number (20143041282).

Almost surely, 2^161023305307 is an apocalyptic number.

161023305307 is a deficient number, since it is larger than the sum of its proper divisors (121024949).

161023305307 is a wasteful number, since it uses less digits than its factorization.

161023305307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21437.

The product of its (nonzero) digits is 11340, while the sum is 31.

Adding to 161023305307 its reverse (703503320161), we get a palindrome (864526625468).

The spelling of 161023305307 in words is "one hundred sixty-one billion, twenty-three million, three hundred five thousand, three hundred seven".