12031033123 has 4 divisors (see below), whose sum is σ = 12032317440. Its totient is φ = 12029748808.

The previous prime is 12031033121. The next prime is 12031033139. The reversal of 12031033123 is 32133013021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32133013021 = 347 ⋅92602343.

It is a cyclic number.

It is not a de Polignac number, because 12031033123 - 2¹ = 12031033121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12031033123.

It is not an unprimeable number, because it can be changed into a prime (12031033121) 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, 628003 + ... + 646876.

It is an arithmetic number, because the mean of its divisors is an integer number (3008079360).

Almost surely, 2^12031033123 is an apocalyptic number.

12031033123 is a deficient number, since it is larger than the sum of its proper divisors (1284317).

12031033123 is an equidigital number, since it uses as much as digits as its factorization.

12031033123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284316.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 12031033123 its reverse (32133013021), we get a palindrome (44164046144).

The spelling of 12031033123 in words is "twelve billion, thirty-one million, thirty-three thousand, one hundred twenty-three".