12031502323 has 4 divisors (see below), whose sum is σ = 12228740128. Its totient is φ = 11834264520.

The previous prime is 12031502321. The next prime is 12031502333. The reversal of 12031502323 is 32320513021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32320513021 = 29 ⋅1114500449.

It is a cyclic number.

It is not a de Polignac number, because 12031502323 - 2¹ = 12031502321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12031502294 and 12031502303.

It is not an unprimeable number, because it can be changed into a prime (12031502321) 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, 98618811 + ... + 98618932.

It is an arithmetic number, because the mean of its divisors is an integer number (3057185032).

Almost surely, 2^12031502323 is an apocalyptic number.

12031502323 is a deficient number, since it is larger than the sum of its proper divisors (197237805).

12031502323 is an equidigital number, since it uses as much as digits as its factorization.

12031502323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197237804.

The product of its (nonzero) digits is 1080, while the sum is 22.

The spelling of 12031502323 in words is "twelve billion, thirty-one million, five hundred two thousand, three hundred twenty-three".