161306422 has 8 divisors (see below), whose sum is σ = 242483616. Its totient is φ = 80478552.

The previous prime is 161306419. The next prime is 161306437. The reversal of 161306422 is 224603161.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86173 + ... + 88024.

It is an arithmetic number, because the mean of its divisors is an integer number (30310452).

Almost surely, 2^161306422 is an apocalyptic number.

161306422 is a deficient number, since it is larger than the sum of its proper divisors (81177194).

161306422 is a wasteful number, since it uses less digits than its factorization.

161306422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174662.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 161306422 is about 12700.6465189769. The cubic root of 161306422 is about 544.3570928056.

Adding to 161306422 its reverse (224603161), we get a palindrome (385909583).

The spelling of 161306422 in words is "one hundred sixty-one million, three hundred six thousand, four hundred twenty-two".