3121000123 has 8 divisors (see below), whose sum is σ = 3160031168. Its totient is φ = 3082109184.

The previous prime is 3121000117. The next prime is 3121000153. The reversal of 3121000123 is 3210001213.

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 3121000123 - 2²⁹ = 2584129211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121000153) 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, 10165 + ... + 79657.

It is an arithmetic number, because the mean of its divisors is an integer number (395003896).

Almost surely, 2^3121000123 is an apocalyptic number.

3121000123 is a deficient number, since it is larger than the sum of its proper divisors (39031045).

3121000123 is an equidigital number, since it uses as much as digits as its factorization.

3121000123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70053.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 3121000123 is about 55865.9119947039. The cubic root of 3121000123 is about 1461.3848315135.

Adding to 3121000123 its reverse (3210001213), we get a palindrome (6331001336).

The spelling of 3121000123 in words is "three billion, one hundred twenty-one million, one hundred twenty-three", and thus it is an aban number.