3123120345 has 32 divisors (see below), whose sum is σ = 5441385600. Its totient is φ = 1523579904.

The previous prime is 3123120313. The next prime is 3123120353. The reversal of 3123120345 is 5430213213.

It is not a de Polignac number, because 3123120345 - 2⁵ = 3123120313 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 180672 + ... + 197201.

It is an arithmetic number, because the mean of its divisors is an integer number (170043300).

Almost surely, 2^3123120345 is an apocalyptic number.

It is an amenable number.

3123120345 is a deficient number, since it is larger than the sum of its proper divisors (2318265255).

3123120345 is a wasteful number, since it uses less digits than its factorization.

3123120345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377929.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 3123120345 is about 55884.8847632345. The cubic root of 3123120345 is about 1461.7156826057.

Adding to 3123120345 its reverse (5430213213), we get a palindrome (8553333558).

The spelling of 3123120345 in words is "three billion, one hundred twenty-three million, one hundred twenty thousand, three hundred forty-five".