3121120123 has 8 divisors (see below), whose sum is σ = 3431669760. Its totient is φ = 2815039080.

The previous prime is 3121120103. The next prime is 3121120141. The reversal of 3121120123 is 3210211213.

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 3121120123 - 2¹⁷ = 3120989051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3121120097 and 3121120106.

It is not an unprimeable number, because it can be changed into a prime (3121120103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1115683 + ... + 1118476.

It is an arithmetic number, because the mean of its divisors is an integer number (428958720).

Almost surely, 2^3121120123 is an apocalyptic number.

3121120123 is a deficient number, since it is larger than the sum of its proper divisors (310549637).

3121120123 is a wasteful number, since it uses less digits than its factorization.

3121120123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234297.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 3121120123 is about 55866.9859845687. The cubic root of 3121120123 is about 1461.4035609726.

Adding to 3121120123 its reverse (3210211213), we get a palindrome (6331331336).

The spelling of 3121120123 in words is "three billion, one hundred twenty-one million, one hundred twenty thousand, one hundred twenty-three".