2312123123 has 4 divisors (see below), whose sum is σ = 2361317280. Its totient is φ = 2262928968.

The previous prime is 2312123117. The next prime is 2312123173. The reversal of 2312123123 is 3213212132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2312123123 - 2⁶ = 2312123059 is a prime.

It is a super-2 number, since 2×2312123123² = 10691826671822546258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2312123095 and 2312123104.

It is not an unprimeable number, because it can be changed into a prime (2312123173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24597008 + ... + 24597101.

It is an arithmetic number, because the mean of its divisors is an integer number (590329320).

Almost surely, 2^2312123123 is an apocalyptic number.

2312123123 is a deficient number, since it is larger than the sum of its proper divisors (49194157).

2312123123 is an equidigital number, since it uses as much as digits as its factorization.

2312123123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49194156.

The product of its digits is 432, while the sum is 20.

The square root of 2312123123 is about 48084.5414140553. The cubic root of 2312123123 is about 1322.3212757767.

Adding to 2312123123 its reverse (3213212132), we get a palindrome (5525335255).

The spelling of 2312123123 in words is "two billion, three hundred twelve million, one hundred twenty-three thousand, one hundred twenty-three".