2161312234 has 8 divisors (see below), whose sum is σ = 3243699360. Its totient is φ = 1080079116.

The previous prime is 2161312229. The next prime is 2161312267. The reversal of 2161312234 is 4322131612.

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

It is a junction number, because it is equal to n+sod(n) for n = 2161312199 and 2161312208.

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, 283804 + ... + 291319.

It is an arithmetic number, because the mean of its divisors is an integer number (405462420).

Almost surely, 2^2161312234 is an apocalyptic number.

2161312234 is a deficient number, since it is larger than the sum of its proper divisors (1082387126).

2161312234 is a wasteful number, since it uses less digits than its factorization.

2161312234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577004.

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

The square root of 2161312234 is about 46489.9154010846. The cubic root of 2161312234 is about 1292.9225316244.

Adding to 2161312234 its reverse (4322131612), we get a palindrome (6483443846).

The spelling of 2161312234 in words is "two billion, one hundred sixty-one million, three hundred twelve thousand, two hundred thirty-four".