161312326 has 32 divisors (see below), whose sum is σ = 289578240. Its totient is φ = 65931936.

The previous prime is 161312321. The next prime is 161312339. The reversal of 161312326 is 623213161.

It is a self number, because there is not a number n which added to its sum of digits gives 161312326.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161312321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31305 + ... + 36091.

It is an arithmetic number, because the mean of its divisors is an integer number (9049320).

Almost surely, 2^161312326 is an apocalyptic number.

161312326 is a deficient number, since it is larger than the sum of its proper divisors (128265914).

161312326 is a wasteful number, since it uses less digits than its factorization.

161312326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4908.

The product of its digits is 1296, while the sum is 25.

The square root of 161312326 is about 12700.8789459628. The cubic root of 161312326 is about 544.3637340891.

Adding to 161312326 its reverse (623213161), we get a palindrome (784525487).

The spelling of 161312326 in words is "one hundred sixty-one million, three hundred twelve thousand, three hundred twenty-six".