12031752813 has 4 divisors (see below), whose sum is σ = 16042337088. Its totient is φ = 8021168540.

The previous prime is 12031752787. The next prime is 12031752871. The reversal of 12031752813 is 31825713021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31825713021 = 3 ⋅10608571007.

It is a cyclic number.

It is not a de Polignac number, because 12031752813 - 2⁶ = 12031752749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031752883) 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, 2005292133 + ... + 2005292138.

It is an arithmetic number, because the mean of its divisors is an integer number (4010584272).

Almost surely, 2^12031752813 is an apocalyptic number.

It is an amenable number.

12031752813 is a deficient number, since it is larger than the sum of its proper divisors (4010584275).

12031752813 is an equidigital number, since it uses as much as digits as its factorization.

12031752813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4010584274.

The product of its (nonzero) digits is 10080, while the sum is 33.

The spelling of 12031752813 in words is "twelve billion, thirty-one million, seven hundred fifty-two thousand, eight hundred thirteen".